Fundies.
English

Segment disclosures

Company overview

B. Riley Principal Merger Corp.

Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.

Revenue · Reported segment facts

84 dimension combinations 768 retained observations 21 reported periods Partial retained history

Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.

Corporate Non Segment · Parts Sales · Corporate And Other

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-30-200000 USD20230809Open filing evidence

Corporate Non Segment · Master Distribution Segment · Parts Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-09-30-400000 USD20251106Open filing evidence

Corporate Non Segment · Master Distribution Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-09-30-100000 USD20251106Open filing evidence
2025-01-01 – 2025-06-30-200000 USD20250807Open filing evidence

Corporate Non Segment · Corporate And Other

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30-800000 USD20260806Open filing evidence
2026-01-01 – 2026-06-30-2200000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31-1400000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31-2400000 USD20260226Open filing evidence
2025-07-01 – 2025-09-30-1900000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30-1100000 USD20251106Open filing evidence
2025-04-01 – 2025-06-30-1100000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30800000 USD20260806Open filing evidence
2025-01-01 – 2025-03-311900000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31-1400000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30-600000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30-800000 USD20251106Open filing evidence
2024-04-01 – 2024-06-30900000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30-200000 USD20250807Open filing evidence
2024-01-01 – 2024-03-31-1100000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31-13200000 USD20260226Open filing evidence
2023-07-01 – 2023-09-30-2500000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30-10000000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30-3600000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30-7500000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31-1400000 USD20250305Open filing evidence

Corporate Non Segment · Corporate And Other · New And Used Equipment Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30-500000 USD20260806Open filing evidence
2026-01-01 – 2026-06-30-1700000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31-1200000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31-2200000 USD20260226Open filing evidence
2025-07-01 – 2025-09-30-1700000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30-800000 USD20251106Open filing evidence
2025-04-01 – 2025-06-30-900000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30900000 USD20260806Open filing evidence
2025-01-01 – 2025-03-311800000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31-600000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30-700000 USD20251106Open filing evidence
2024-01-01 – 2024-09-300 USD20251106Open filing evidence
2024-04-01 – 2024-06-301400000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30700000 USD20250807Open filing evidence
2024-01-01 – 2024-03-31-700000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31-12100000 USD20260226Open filing evidence
2023-07-01 – 2023-09-30-2200000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30-9100000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30-3400000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30-6900000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31-1200000 USD20250305Open filing evidence

Corporate Non Segment · Corporate And Other · Parts Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30-300000 USD20260806Open filing evidence
2026-01-01 – 2026-06-30-500000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31-200000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31-400000 USD20260226Open filing evidence
2025-07-01 – 2025-09-30-200000 USD20251106Open filing evidence
2025-04-01 – 2025-06-30-200000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30-200000 USD20260806Open filing evidence
2024-01-01 – 2024-12-31-800000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30-100000 RestatedUSD20251106Open filing evidence
2024-01-01 – 2024-09-30-800000 USD20251106Open filing evidence
2024-04-01 – 2024-06-30-500000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30-900000 USD20250807Open filing evidence
2024-01-01 – 2024-03-31-400000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31-1100000 USD20260226Open filing evidence
2023-07-01 – 2023-09-30-300000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30-900000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30-200000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30-600000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31-200000 USD20250305Open filing evidence

Corporate Non Segment · Corporate And Other · Rental Revenue

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2025-07-01 – 2025-09-30-100000 USD20251106Open filing evidence
2025-01-01 – 2025-09-300 USD20251106Open filing evidence
2025-01-01 – 2025-06-30100000 USD20260806Open filing evidence
2025-01-01 – 2025-03-31100000 USD20260507Open filing evidence

Corporate Non Segment · Corporate And Other · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31200000 USD20260226Open filing evidence
2025-07-01 – 2025-09-30-100000 USD20251106Open filing evidence

Operating Segments · New And Used Equipment Sales · Construction Equipment Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31126100000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31597900000 USD20240314Open filing evidence
2023-01-01 – 2023-03-31112100000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31508200000 USD20240314Open filing evidence
2021-01-01 – 2021-12-31310500000 USD20240314Open filing evidence

Operating Segments · New And Used Equipment Sales · Material Handling Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-3089800000 USD20231108Open filing evidence
2023-01-01 – 2023-09-30267500000 USD20231108Open filing evidence
2023-04-01 – 2023-06-3090200000 USD20230809Open filing evidence
2023-01-01 – 2023-06-30177700000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3187500000 USD20230510Open filing evidence
2022-01-01 – 2022-12-31305200000 USD20230309Open filing evidence
2022-07-01 – 2022-09-3083700000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30222700000 USD20231108Open filing evidence
2022-04-01 – 2022-06-3072100000 USD20230809Open filing evidence
2022-01-01 – 2022-06-30139000000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3166900000 USD20230510Open filing evidence
2021-01-01 – 2021-12-31258300000 USD20230309Open filing evidence
2021-07-01 – 2021-09-3057200000 USD20221109Open filing evidence
2021-01-01 – 2021-09-30174700000 USD20221109Open filing evidence
2021-04-01 – 2021-06-3060100000 USD20220809Open filing evidence
2021-01-01 – 2021-06-30117500000 USD20220809Open filing evidence

Operating Segments · Parts Sales · Construction Equipment Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-3042900000 USD20231108Open filing evidence
2022-01-01 – 2022-03-3134200000 USD20230510Open filing evidence

Operating Segments · Parts Sales · Material Handling Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-06-3047200000 USD20260806Open filing evidence
2025-01-01 – 2025-09-3072500000 USD20251106Open filing evidence
2025-01-01 – 2025-06-3048000000 USD20250807Open filing evidence
2025-01-01 – 2025-03-3124300000 USD20250507Open filing evidence
2024-01-01 – 2024-12-3199600000 USD20260226Open filing evidence
2024-01-01 – 2024-09-3076700000 USD20251106Open filing evidence
2024-01-01 – 2024-06-3051800000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3124900000 USD20250507Open filing evidence
2023-07-01 – 2023-09-3024400000 USD20231108Open filing evidence
2023-01-01 – 2023-09-3075800000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3026400000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3051400000 USD20240807Open filing evidence
2022-01-01 – 2022-12-3184400000 USD20230309Open filing evidence
2022-01-01 – 2022-09-3061600000 USD20231108Open filing evidence
2022-04-01 – 2022-06-3020100000 USD20220809Open filing evidence
2022-01-01 – 2022-06-3039300000 USD20220809Open filing evidence
2022-01-01 – 2022-03-3119200000 USD20230510Open filing evidence
2021-01-01 – 2021-12-3165400000 USD20230309Open filing evidence
2021-07-01 – 2021-09-3016800000 USD20221109Open filing evidence

Operating Segments · Rental Equipment Sales · Material Handling Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-305500000 USD20260806Open filing evidence
2026-01-01 – 2026-06-309400000 USD20260806Open filing evidence
2026-01-01 – 2026-03-313900000 USD20260507Open filing evidence
2025-01-01 – 2025-12-3119900000 USD20260226Open filing evidence
2025-07-01 – 2025-09-305000000 USD20251106Open filing evidence
2025-01-01 – 2025-09-3012800000 USD20251106Open filing evidence
2025-04-01 – 2025-06-304300000 USD20260806Open filing evidence
2025-01-01 – 2025-06-307800000 USD20260806Open filing evidence
2025-01-01 – 2025-03-313500000 USD20260507Open filing evidence
2024-01-01 – 2024-12-3110500000 USD20260226Open filing evidence
2024-07-01 – 2024-09-302800000 USD20251106Open filing evidence
2024-01-01 – 2024-09-308100000 USD20251106Open filing evidence
2024-04-01 – 2024-06-302800000 USD20250807Open filing evidence
2024-01-01 – 2024-06-305300000 USD20250807Open filing evidence
2024-01-01 – 2024-03-312500000 USD20250507Open filing evidence
2023-01-01 – 2023-12-315200000 USD20260226Open filing evidence
2023-07-01 – 2023-09-301600000 USD20241112Open filing evidence
2023-01-01 – 2023-09-303900000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30900000 USD20240807Open filing evidence
2023-01-01 – 2023-06-302300000 USD20240807Open filing evidence
2022-01-01 – 2022-12-315500000 USD20250305Open filing evidence
2022-07-01 – 2022-09-302000000 USD20231108Open filing evidence
2021-01-01 – 2021-06-30800000 USD20220809Open filing evidence

Operating Segments · Rental Revenue · Construction Equipment Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3129100000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31124800000 USD20240314Open filing evidence
2023-01-01 – 2023-03-3125300000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31116600000 USD20240314Open filing evidence
2021-01-01 – 2021-12-31107100000 USD20240314Open filing evidence

Operating Segments · Rental Revenue · Material Handling Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3016700000 USD20260806Open filing evidence
2026-01-01 – 2026-06-3033200000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3116500000 USD20260507Open filing evidence
2025-01-01 – 2025-12-3170000000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3018100000 USD20251106Open filing evidence
2025-01-01 – 2025-09-3053200000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3017500000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3035100000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3117600000 USD20260507Open filing evidence
2024-01-01 – 2024-12-3176200000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3019300000 USD20251106Open filing evidence
2024-01-01 – 2024-09-3058300000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3020000000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3039000000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3119000000 USD20250507Open filing evidence
2023-01-01 – 2023-12-3176400000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3019600000 USD20241112Open filing evidence
2023-01-01 – 2023-09-3056200000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3018600000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3036600000 USD20240807Open filing evidence
2023-01-01 – 2023-03-3118000000 USD20230510Open filing evidence
2022-01-01 – 2022-12-3163500000 USD20250305Open filing evidence
2022-07-01 – 2022-09-3017700000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3044700000 USD20231108Open filing evidence
2022-04-01 – 2022-06-3014200000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3027000000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3112800000 USD20230510Open filing evidence
2021-01-01 – 2021-12-3148400000 USD20230309Open filing evidence
2021-07-01 – 2021-09-3012600000 USD20221109Open filing evidence
2021-01-01 – 2021-09-3035100000 USD20221109Open filing evidence
2021-04-01 – 2021-06-3011400000 USD20220809Open filing evidence
2021-01-01 – 2021-06-3022500000 USD20220809Open filing evidence

Operating Segments · Service · Construction Equipment Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3130100000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31108200000 USD20240314Open filing evidence
2023-01-01 – 2023-03-3127200000 USD20240508Open filing evidence
2022-01-01 – 2022-12-3194400000 USD20240314Open filing evidence
2021-01-01 – 2021-12-3170900000 USD20240314Open filing evidence

Operating Segments · Construction Equipment Segment

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31255600000 USD20240508Open filing evidence
2023-01-01 – 2023-12-311124700000 USD20240314Open filing evidence
2023-07-01 – 2023-09-30282000000 USD20231108Open filing evidence
2023-01-01 – 2023-03-31233100000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31995800000 USD20240314Open filing evidence
2022-07-01 – 2022-09-30249700000 USD20221109Open filing evidence
2022-01-01 – 2022-06-30477100000 USD20230809Open filing evidence
2022-01-01 – 2022-03-31206100000 USD20230510Open filing evidence
2021-01-01 – 2021-12-31745300000 USD20240314Open filing evidence
2021-07-01 – 2021-09-30184700000 USD20211112Open filing evidence
2021-01-01 – 2021-09-30527800000 USD20221109Open filing evidence
2021-04-01 – 2021-06-30181100000 USD20220809Open filing evidence
2021-01-01 – 2021-06-30343100000 USD20220809Open filing evidence

Operating Segments · Construction Equipment Segment · New And Used Equipment Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-30149200000 USD20230809Open filing evidence
2023-01-01 – 2023-06-30261300000 USD20230809Open filing evidence
2023-01-01 – 2023-03-31112100000 USD20230510Open filing evidence
2022-01-01 – 2022-12-31508200000 USD20230309Open filing evidence
2022-01-01 – 2022-09-30356300000 USD20231108Open filing evidence
2022-04-01 – 2022-06-30145200000 USD20230809Open filing evidence
2022-01-01 – 2022-06-30229900000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3184700000 USD20230510Open filing evidence
2021-07-01 – 2021-09-3079600000 USD20221109Open filing evidence
2021-01-01 – 2021-09-30217900000 USD20221109Open filing evidence
2021-04-01 – 2021-06-3071900000 USD20210812Open filing evidence
2021-01-01 – 2021-06-30138300000 USD20210812Open filing evidence

Operating Segments · Construction Equipment Segment · Parts Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-3042600000 USD20230809Open filing evidence
2022-07-01 – 2022-09-3039500000 USD20231108Open filing evidence
2022-04-01 – 2022-06-3038200000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3072400000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3134200000 USD20220510Open filing evidence
2021-01-01 – 2021-12-31113100000 USD20230309Open filing evidence
2021-07-01 – 2021-09-3028000000 USD20221109Open filing evidence
2021-01-01 – 2021-09-3082600000 USD20211112Open filing evidence
2021-04-01 – 2021-06-3028400000 USD20210812Open filing evidence
2021-01-01 – 2021-06-3054600000 USD20210812Open filing evidence

Operating Segments · Construction Equipment Segment · Rental Equipment Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3124400000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31123700000 USD20240314Open filing evidence
2023-01-01 – 2023-09-3086800000 USD20231108Open filing evidence
2023-01-01 – 2023-06-3059900000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3127600000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31127600000 USD20240314Open filing evidence
2022-07-01 – 2022-09-3026600000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30100800000 USD20231108Open filing evidence
2022-01-01 – 2022-03-3140800000 USD20230510Open filing evidence
2021-01-01 – 2021-12-31143700000 USD20240314Open filing evidence
2021-07-01 – 2021-09-3029800000 USD20221109Open filing evidence
2021-01-01 – 2021-09-3096800000 USD20221109Open filing evidence
2021-04-01 – 2021-06-3035700000 USD20210812Open filing evidence
2021-01-01 – 2021-06-3067000000 USD20220809Open filing evidence

Operating Segments · Construction Equipment Segment · Rental Revenue

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-09-3090200000 USD20231108Open filing evidence
2023-04-01 – 2023-06-3030800000 USD20230809Open filing evidence
2023-01-01 – 2023-06-3056100000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3125300000 USD20230510Open filing evidence
2022-01-01 – 2022-12-31116600000 USD20230309Open filing evidence
2022-07-01 – 2022-09-3032500000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3086800000 USD20231108Open filing evidence
2022-01-01 – 2022-06-3054300000 USD20220809Open filing evidence
2022-01-01 – 2022-03-3124900000 USD20230510Open filing evidence
2021-01-01 – 2021-12-31107100000 USD20230309Open filing evidence
2021-07-01 – 2021-09-3029100000 USD20221109Open filing evidence
2021-01-01 – 2021-09-3077900000 USD20211112Open filing evidence

Operating Segments · Construction Equipment Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-09-3052600000 USD20211112Open filing evidence

Operating Segments · Master Distribution Segment

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3022800000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3117100000 USD20260507Open filing evidence
2025-07-01 – 2025-09-3015000000 USD20251106Open filing evidence
2025-01-01 – 2025-09-3053300000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3020900000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3038300000 USD20250807Open filing evidence
2025-01-01 – 2025-03-3117400000 USD20260507Open filing evidence
2024-01-01 – 2024-12-3159200000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3018200000 USD20251106Open filing evidence
2024-01-01 – 2024-09-3047700000 USD20241112Open filing evidence
2024-04-01 – 2024-06-3016700000 USD20240807Open filing evidence
2024-01-01 – 2024-06-3029500000 USD20240807Open filing evidence
2024-01-01 – 2024-03-3112800000 USD20250507Open filing evidence
2023-01-01 – 2023-12-3183800000 USD20250305Open filing evidence
2023-07-01 – 2023-09-3018100000 USD20241112Open filing evidence
2023-01-01 – 2023-09-3066200000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3021400000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3048100000 USD20240807Open filing evidence
2022-01-01 – 2022-12-316700000 USD20250305Open filing evidence

Operating Segments · Master Distribution Segment · New And Used Equipment Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-3114100000 USD20260507Open filing evidence
2025-01-01 – 2025-06-3032400000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3114800000 USD20260507Open filing evidence
2024-01-01 – 2024-12-3148000000 USD20250305Open filing evidence
2024-07-01 – 2024-09-3015300000 USD20251106Open filing evidence
2024-01-01 – 2024-09-3038800000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3014400000 USD20240807Open filing evidence
2024-01-01 – 2024-06-3023500000 USD20240807Open filing evidence
2024-01-01 – 2024-03-319100000 USD20250507Open filing evidence
2023-01-01 – 2023-12-3172500000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3015200000 USD20241112Open filing evidence
2023-01-01 – 2023-06-3042100000 USD20240807Open filing evidence
2022-01-01 – 2022-12-315000000 USD20250305Open filing evidence

Operating Segments · Master Distribution Segment · Parts Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-302900000 USD20260806Open filing evidence
2026-01-01 – 2026-06-305600000 USD20260806Open filing evidence
2026-01-01 – 2026-03-312700000 USD20260507Open filing evidence
2025-07-01 – 2025-09-302500000 USD20251106Open filing evidence
2025-01-01 – 2025-09-307900000 USD20251106Open filing evidence
2025-01-01 – 2025-06-305400000 USD20250807Open filing evidence
2024-01-01 – 2024-12-318900000 USD20250305Open filing evidence
2024-07-01 – 2024-09-302200000 USD20251106Open filing evidence
2024-01-01 – 2024-09-307100000 USD20251106Open filing evidence
2024-04-01 – 2024-06-302400000 USD20250807Open filing evidence
2024-01-01 – 2024-06-304900000 USD20250807Open filing evidence
2024-01-01 – 2024-03-312500000 USD20250507Open filing evidence
2023-01-01 – 2023-12-319800000 USD20250305Open filing evidence
2023-01-01 – 2023-09-307900000 USD20241112Open filing evidence
2023-04-01 – 2023-06-302500000 USD20240807Open filing evidence
2023-01-01 – 2023-06-305400000 USD20240807Open filing evidence

Operating Segments · Master Distribution Segment · Rental Equipment Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember
PeriodValueUnitFiledEvidence
2024-07-01 – 2024-09-30-0 USD20251106Open filing evidence
2024-04-01 – 2024-06-30-700000 USD20250807Open filing evidence

Operating Segments · Master Distribution Segment · Rental Revenue

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30100000 USD20260806Open filing evidence
2025-07-01 – 2025-09-30300000 USD20251106Open filing evidence
2024-01-01 – 2024-12-311500000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30400000 USD20241112Open filing evidence
2024-01-01 – 2024-09-301200000 USD20251106Open filing evidence
2024-04-01 – 2024-06-30400000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30800000 USD20250807Open filing evidence
2024-01-01 – 2024-03-31400000 USD20250507Open filing evidence
2023-01-01 – 2023-12-311200000 USD20260226Open filing evidence
2023-01-01 – 2023-09-30700000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30200000 USD20240807Open filing evidence

Operating Segments · Master Distribution Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-06-30300000 USD20260806Open filing evidence
2025-01-01 – 2025-12-31900000 USD20260226Open filing evidence
2025-04-01 – 2025-06-30300000 USD20250807Open filing evidence
2025-01-01 – 2025-03-31200000 USD20250507Open filing evidence
2024-01-01 – 2024-12-31800000 USD20250305Open filing evidence
2024-01-01 – 2024-09-30600000 USD20251106Open filing evidence
2024-04-01 – 2024-06-30200000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30300000 USD20250807Open filing evidence
2023-07-01 – 2023-09-30100000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30100000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30200000 USD20240807Open filing evidence

Operating Segments · Material Handling Segment

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30155500000 USD20260806Open filing evidence
2026-01-01 – 2026-06-30306000000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31150500000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31654300000 USD20260226Open filing evidence
2025-07-01 – 2025-09-30167900000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30486500000 USD20251106Open filing evidence
2025-04-01 – 2025-06-30160700000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30318600000 USD20260806Open filing evidence
2025-01-01 – 2025-03-31157900000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31687400000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30168900000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30518800000 USD20251106Open filing evidence
2024-04-01 – 2024-06-30175600000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30349900000 USD20250807Open filing evidence
2024-01-01 – 2024-03-31174300000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31681500000 USD20260226Open filing evidence
2023-07-01 – 2023-09-30168600000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30502500000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30169100000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30333900000 USD20240807Open filing evidence
2023-01-01 – 2023-03-31164800000 USD20230510Open filing evidence
2022-01-01 – 2022-12-31570700000 USD20250305Open filing evidence
2022-07-01 – 2022-09-30155300000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30416400000 USD20231108Open filing evidence
2022-04-01 – 2022-06-30135500000 USD20230809Open filing evidence
2022-01-01 – 2022-06-30261100000 USD20230809Open filing evidence
2022-01-01 – 2022-03-31125600000 USD20230510Open filing evidence
2021-01-01 – 2021-12-31467500000 USD20230309Open filing evidence
2021-07-01 – 2021-09-30110300000 USD20221109Open filing evidence
2021-01-01 – 2021-09-30328700000 USD20221109Open filing evidence

Operating Segments · Material Handling Segment · New And Used Equipment Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3074300000 USD20260806Open filing evidence
2026-01-01 – 2026-06-30147100000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3172800000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31335400000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3085600000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30245900000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3081900000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30160300000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3178400000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31365200000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3087200000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30271500000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3090200000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30184300000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3194100000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31367600000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3089800000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30267500000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3090200000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30177700000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31305200000 USD20250305Open filing evidence
2021-01-01 – 2021-09-30174700000 USD20211112Open filing evidence

Operating Segments · Material Handling Segment · Parts Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3023900000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3123300000 USD20260507Open filing evidence
2025-01-01 – 2025-12-3195100000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3024500000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3023700000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3048000000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3124300000 USD20260507Open filing evidence
2024-01-01 – 2024-12-3199600000 USD20250305Open filing evidence
2024-07-01 – 2024-09-3024900000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3026900000 USD20250807Open filing evidence
2023-01-01 – 2023-12-3199500000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3024400000 USD20241112Open filing evidence
2022-01-01 – 2022-12-3184400000 USD20250305Open filing evidence
2021-01-01 – 2021-09-3047700000 USD20211112Open filing evidence

Operating Segments · Material Handling Segment · Rental Equipment Sales

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-301600000 USD20231108Open filing evidence
2023-01-01 – 2023-09-303900000 USD20231108Open filing evidence
2023-04-01 – 2023-06-30900000 USD20230809Open filing evidence
2023-01-01 – 2023-06-302300000 USD20230809Open filing evidence
2023-01-01 – 2023-03-311400000 USD20230510Open filing evidence
2022-01-01 – 2022-12-315500000 USD20230309Open filing evidence
2022-01-01 – 2022-09-304200000 USD20231108Open filing evidence
2022-04-01 – 2022-06-302200000 USD20230809Open filing evidence
2022-01-01 – 2022-06-302200000 USD20230809Open filing evidence
2021-01-01 – 2021-12-31800000 USD20230309Open filing evidence
2021-01-01 – 2021-09-30800000 USD20221109Open filing evidence

Operating Segments · Material Handling Segment · Rental Revenue

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-09-3035100000 USD20211112Open filing evidence

Operating Segments · Material Handling Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3035100000 USD20260806Open filing evidence
2026-01-01 – 2026-06-3069100000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3134000000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31133900000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3034700000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30102100000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3033300000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3067400000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3134100000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31135900000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3034700000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30104200000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3035700000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3069500000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3133800000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31132800000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3033200000 USD20241112Open filing evidence
2023-01-01 – 2023-09-3099100000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3033000000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3065900000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31112100000 USD20250305Open filing evidence
2021-01-01 – 2021-09-3070400000 USD20211112Open filing evidence

New And Used Equipment Sales · Operating Segments · Construction Equipment Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-31310500000 USD20220331Open filing evidence
2021-07-01 – 2021-09-3079600000 USD20211112Open filing evidence

New And Used Equipment Sales · Operating Segments · Material Handling Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-31258300000 USD20220331Open filing evidence
2021-07-01 – 2021-09-3057200000 USD20211112Open filing evidence

Parts Sales · Corporate Non Segment · Corporate And Other

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-30-300000 USD20231108Open filing evidence
2023-01-01 – 2023-09-30-900000 USD20231108Open filing evidence
2023-01-01 – 2023-06-30-600000 USD20230809Open filing evidence

Parts Sales · Operating Segments · Construction Equipment Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3145900000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31170100000 USD20240314Open filing evidence
2023-01-01 – 2023-06-3083500000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3140900000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31149000000 USD20240314Open filing evidence
2022-01-01 – 2022-06-3072400000 USD20220809Open filing evidence
2021-01-01 – 2021-12-31113100000 USD20240314Open filing evidence
2021-07-01 – 2021-09-3028000000 USD20211112Open filing evidence

Parts Sales · Operating Segments · Material Handling Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-09-3075800000 USD20231108Open filing evidence
2023-01-01 – 2023-03-3125000000 USD20230510Open filing evidence
2022-07-01 – 2022-09-3022300000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3061600000 USD20221109Open filing evidence
2022-04-01 – 2022-06-3020100000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3039300000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3119200000 USD20220510Open filing evidence
2021-01-01 – 2021-12-3165400000 USD20220331Open filing evidence
2021-07-01 – 2021-09-3016800000 USD20211112Open filing evidence
2021-01-01 – 2021-09-3047700000 USD20221109Open filing evidence

Parts Sales · Construction Equipment Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-3140900000 USD20230510Open filing evidence
2022-01-01 – 2022-09-30111900000 USD20221109Open filing evidence
2021-01-01 – 2021-09-3082600000 USD20221109Open filing evidence

Parts Sales · Master Distribution Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-312500000 USD20240508Open filing evidence
2023-01-01 – 2023-12-319800000 USD20240314Open filing evidence
2023-01-01 – 2023-03-312900000 USD20240508Open filing evidence

Parts Sales · Material Handling Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-12-3199500000 USD20240314Open filing evidence

Parts Sales · Corporate And Other

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-31-400000 USD20230510Open filing evidence
2022-01-01 – 2022-12-311400000 USD20230309Open filing evidence

Parts Sales · Corporate And Other · Corporate Non Segment

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=altg:PartsSalesMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31-400000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31-1100000 USD20240314Open filing evidence
2023-01-01 – 2023-03-31-400000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31-200000 USD20240314Open filing evidence

Rental Equipment Sales · Operating Segments · Construction Equipment Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-31143700000 USD20220331Open filing evidence
2021-07-01 – 2021-09-3029800000 USD20211112Open filing evidence

Rental Equipment Sales · Operating Segments · Material Handling Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-31800000 USD20220331Open filing evidence

Rental Revenue · Operating Segments · Construction Equipment Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:RentalRevenueMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-31107100000 USD20220331Open filing evidence
2021-07-01 – 2021-09-3029100000 USD20211112Open filing evidence

Rental Revenue · Operating Segments · Material Handling Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=altg:RentalRevenueMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-3148400000 USD20220331Open filing evidence
2021-07-01 – 2021-09-3012600000 USD20211112Open filing evidence

Service · Operating Segments · Construction Equipment Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-09-3081100000 USD20231108Open filing evidence
2023-04-01 – 2023-06-3026600000 USD20230809Open filing evidence
2022-01-01 – 2022-12-3194400000 USD20230309Open filing evidence
2022-01-01 – 2022-09-3071000000 USD20231108Open filing evidence
2022-01-01 – 2022-06-3046300000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3121500000 USD20230510Open filing evidence
2021-01-01 – 2021-12-3170900000 USD20230309Open filing evidence
2021-07-01 – 2021-09-3018200000 USD20211112Open filing evidence

Service · Operating Segments · Material Handling Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-3033200000 USD20231108Open filing evidence
2023-01-01 – 2023-09-3099100000 USD20231108Open filing evidence
2023-04-01 – 2023-06-3033000000 USD20230809Open filing evidence
2023-01-01 – 2023-06-3065900000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3132900000 USD20230510Open filing evidence
2022-01-01 – 2022-12-31112100000 USD20230309Open filing evidence
2022-07-01 – 2022-09-3029600000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3083200000 USD20231108Open filing evidence
2022-04-01 – 2022-06-3026900000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3053600000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3126700000 USD20230510Open filing evidence
2021-01-01 – 2021-12-3194600000 USD20230309Open filing evidence
2021-07-01 – 2021-09-3023700000 USD20221109Open filing evidence
2021-01-01 – 2021-09-3070400000 USD20221109Open filing evidence

Service · Construction Equipment Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-3027300000 USD20231108Open filing evidence
2023-01-01 – 2023-06-3053800000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3127200000 USD20230510Open filing evidence
2022-07-01 – 2022-09-3024700000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3071000000 USD20221109Open filing evidence
2022-04-01 – 2022-06-3024800000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3046300000 USD20220809Open filing evidence
2022-01-01 – 2022-03-3121500000 USD20220510Open filing evidence
2021-07-01 – 2021-09-3018200000 USD20221109Open filing evidence
2021-01-01 – 2021-09-3052600000 USD20221109Open filing evidence

Service · Master Distribution Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-30100000 USD20231108Open filing evidence
2023-04-01 – 2023-06-30100000 USD20230809Open filing evidence
2023-01-01 – 2023-06-30200000 USD20230809Open filing evidence

Service · Corporate And Other

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-12-31100000 USD20230309Open filing evidence

Construction Equipment Segment

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-311131400000 USD20250305Open filing evidence

Construction Equipment Segment · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30298000000 USD20260806Open filing evidence
2026-01-01 – 2026-06-30542300000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31244300000 USD20260507Open filing evidence
2025-01-01 – 2025-12-311116700000 USD20260226Open filing evidence
2025-07-01 – 2025-09-30241600000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30788100000 USD20251106Open filing evidence
2025-04-01 – 2025-06-30300700000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30546500000 USD20260806Open filing evidence
2025-01-01 – 2025-03-31245800000 USD20260507Open filing evidence
2024-01-01 – 2024-12-311131400000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30262300000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30812800000 USD20251106Open filing evidence
2024-04-01 – 2024-06-30294900000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30550500000 USD20250807Open filing evidence
2024-01-01 – 2024-03-31255600000 USD20250507Open filing evidence
2023-01-01 – 2023-12-311124700000 USD20260226Open filing evidence
2023-07-01 – 2023-09-30282000000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30796600000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30281500000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30514600000 USD20240807Open filing evidence
2023-01-01 – 2023-03-31233100000 USD20230510Open filing evidence
2022-01-01 – 2022-12-31995800000 USD20250305Open filing evidence
2022-07-01 – 2022-09-30249700000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30726800000 USD20231108Open filing evidence
2022-04-01 – 2022-06-30271000000 USD20230809Open filing evidence
2022-01-01 – 2022-06-30477100000 USD20220809Open filing evidence
2021-01-01 – 2021-12-31745300000 USD20230309Open filing evidence
2021-07-01 – 2021-09-30184700000 USD20221109Open filing evidence

Construction Equipment Segment · Operating Segments · New And Used Equipment Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30168600000 USD20260806Open filing evidence
2026-01-01 – 2026-06-30289800000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31121200000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31610500000 USD20260226Open filing evidence
2025-07-01 – 2025-09-30115200000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30408900000 USD20251106Open filing evidence
2025-04-01 – 2025-06-30167000000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30293700000 USD20260806Open filing evidence
2025-01-01 – 2025-03-31126700000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31574400000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30118000000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30389600000 USD20251106Open filing evidence
2024-04-01 – 2024-06-30145500000 USD20250807Open filing evidence
2024-01-01 – 2024-06-30271600000 USD20250807Open filing evidence
2024-01-01 – 2024-03-31126100000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31597900000 USD20260226Open filing evidence
2023-07-01 – 2023-09-30150800000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30412100000 USD20241112Open filing evidence
2023-04-01 – 2023-06-30149200000 USD20240807Open filing evidence
2023-01-01 – 2023-06-30261300000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31508200000 USD20250305Open filing evidence
2022-07-01 – 2022-09-30126400000 USD20231108Open filing evidence
2021-01-01 – 2021-12-31310500000 USD20230309Open filing evidence

Construction Equipment Segment · Operating Segments · Parts Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3049100000 USD20260806Open filing evidence
2026-01-01 – 2026-06-3094500000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3145400000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31185800000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3048500000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30142900000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3049100000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3094400000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3145300000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31186700000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3048400000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30143500000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3049200000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3095100000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3145900000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31170100000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3042900000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30126400000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3042600000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3083500000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31149000000 USD20250305Open filing evidence

Construction Equipment Segment · Operating Segments · Rental Equipment Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3023600000 USD20260806Open filing evidence
2026-01-01 – 2026-06-3049900000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3126300000 USD20260507Open filing evidence
2025-01-01 – 2025-12-3189200000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3016400000 USD20251106Open filing evidence
2025-01-01 – 2025-09-3058300000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3024500000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3041900000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3117400000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31127500000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3032300000 USD20251106Open filing evidence
2024-01-01 – 2024-09-3093300000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3036600000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3061000000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3124400000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31123700000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3026900000 USD20241112Open filing evidence
2023-01-01 – 2023-09-3086800000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3032300000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3059900000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31127600000 USD20250305Open filing evidence
2022-01-01 – 2022-09-30100800000 USD20221109Open filing evidence
2022-04-01 – 2022-06-3033400000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3074200000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3140800000 USD20220510Open filing evidence
2021-01-01 – 2021-12-31143700000 USD20230309Open filing evidence

Construction Equipment Segment · Operating Segments · Rental Revenue

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3028100000 USD20260806Open filing evidence
2026-01-01 – 2026-06-3050100000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3122000000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31109500000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3030100000 USD20251106Open filing evidence
2025-01-01 – 2025-09-3083500000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3028800000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3053400000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3124600000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31125700000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3034000000 USD20251106Open filing evidence
2024-01-01 – 2024-09-3096400000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3033300000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3062400000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3129100000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31124800000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3034100000 USD20241112Open filing evidence
2023-01-01 – 2023-09-3090200000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3030800000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3056100000 USD20240807Open filing evidence
2022-01-01 – 2022-12-31116600000 USD20250305Open filing evidence
2022-07-01 – 2022-09-3032500000 USD20221109Open filing evidence
2022-01-01 – 2022-09-3086800000 USD20221109Open filing evidence
2022-04-01 – 2022-06-3029400000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3054300000 USD20230809Open filing evidence
2021-01-01 – 2021-09-3077900000 USD20221109Open filing evidence

Construction Equipment Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3028600000 USD20260806Open filing evidence
2026-01-01 – 2026-06-3058000000 USD20260806Open filing evidence
2026-01-01 – 2026-03-3129400000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31121700000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3031400000 USD20251106Open filing evidence
2025-01-01 – 2025-09-3094500000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3031300000 USD20260806Open filing evidence
2025-01-01 – 2025-06-3063100000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3131800000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31117100000 USD20260226Open filing evidence
2024-07-01 – 2024-09-3029600000 USD20251106Open filing evidence
2024-01-01 – 2024-09-3090000000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3030300000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3060400000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3130100000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31108200000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3027300000 USD20241112Open filing evidence
2023-01-01 – 2023-09-3081100000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3026600000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3053800000 USD20240807Open filing evidence
2022-01-01 – 2022-12-3194400000 USD20250305Open filing evidence

Construction Equipment Segment · New And Used Equipment Sales

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31574400000 USD20250305Open filing evidence

Construction Equipment Segment · Parts Sales

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31186700000 USD20250305Open filing evidence

Construction Equipment Segment · Parts Sales · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-09-30126400000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30111900000 USD20231108Open filing evidence
2022-04-01 – 2022-06-3038200000 USD20220809Open filing evidence

Construction Equipment Segment · Rental Equipment Sales

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31127500000 USD20250305Open filing evidence

Construction Equipment Segment · Rental Revenue

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31125700000 USD20250305Open filing evidence

Construction Equipment Segment · Service

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:ConstructionEquipmentSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-31117100000 USD20250305Open filing evidence

Master Distribution Segment · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-06-3039900000 USD20260806Open filing evidence
2025-01-01 – 2025-12-3167300000 USD20260226Open filing evidence
2025-01-01 – 2025-06-3038300000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3117400000 USD20250507Open filing evidence
2024-01-01 – 2024-12-3159200000 USD20250305Open filing evidence
2024-07-01 – 2024-09-3018200000 USD20241112Open filing evidence
2024-01-01 – 2024-09-3047700000 USD20251106Open filing evidence
2024-04-01 – 2024-06-3016700000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3029500000 USD20250807Open filing evidence
2024-01-01 – 2024-03-3112800000 USD20240508Open filing evidence
2023-01-01 – 2023-12-3183800000 USD20260226Open filing evidence
2023-07-01 – 2023-09-3018100000 USD20231108Open filing evidence
2023-01-01 – 2023-09-3066200000 USD20231108Open filing evidence
2023-04-01 – 2023-06-3021400000 USD20230809Open filing evidence
2023-01-01 – 2023-06-3048100000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3126700000 USD20240508Open filing evidence
2022-01-01 – 2022-12-316700000 USD20240314Open filing evidence

Master Distribution Segment · Operating Segments · New And Used Equipment Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3019700000 USD20260806Open filing evidence
2026-01-01 – 2026-06-3033800000 USD20260806Open filing evidence
2025-01-01 – 2025-12-3155600000 USD20260226Open filing evidence
2025-07-01 – 2025-09-3012000000 USD20251106Open filing evidence
2025-01-01 – 2025-09-3044400000 USD20251106Open filing evidence
2025-04-01 – 2025-06-3017600000 USD20260806Open filing evidence
2025-01-01 – 2025-03-3114800000 USD20250507Open filing evidence
2024-01-01 – 2024-12-3148000000 USD20260226Open filing evidence
2024-04-01 – 2024-06-3014400000 USD20250807Open filing evidence
2024-01-01 – 2024-06-3023500000 USD20250807Open filing evidence
2024-01-01 – 2024-03-319100000 USD20240508Open filing evidence
2023-01-01 – 2023-12-3172500000 USD20240314Open filing evidence
2023-07-01 – 2023-09-3015200000 USD20231108Open filing evidence
2023-01-01 – 2023-09-3057300000 USD20241112Open filing evidence
2023-04-01 – 2023-06-3018600000 USD20240807Open filing evidence
2023-01-01 – 2023-06-3042100000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3123500000 USD20240508Open filing evidence
2022-01-01 – 2022-12-315000000 USD20240314Open filing evidence

Master Distribution Segment · Operating Segments · Parts Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:PartsSalesMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-3110500000 USD20260226Open filing evidence
2025-04-01 – 2025-06-303000000 USD20260806Open filing evidence
2025-01-01 – 2025-06-305400000 USD20260806Open filing evidence
2025-01-01 – 2025-03-312400000 USD20260507Open filing evidence
2024-01-01 – 2024-12-318900000 USD20260226Open filing evidence
2024-07-01 – 2024-09-302200000 USD20241112Open filing evidence
2023-01-01 – 2023-12-319800000 USD20260226Open filing evidence
2023-07-01 – 2023-09-302500000 USD20241112Open filing evidence
2023-04-01 – 2023-06-302500000 USD20230809Open filing evidence
2023-01-01 – 2023-03-312900000 USD20230510Open filing evidence
2022-01-01 – 2022-12-311600000 USD20250305Open filing evidence

Master Distribution Segment · Operating Segments · Rental Equipment Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31700000 USD20250507Open filing evidence

Master Distribution Segment · Operating Segments · Rental Revenue

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-06-30200000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31100000 USD20260507Open filing evidence
2025-01-01 – 2025-12-31300000 USD20260226Open filing evidence
2025-01-01 – 2025-09-30300000 USD20251106Open filing evidence
2024-07-01 – 2024-09-30400000 USD20251106Open filing evidence
2024-01-01 – 2024-03-31400000 USD20240508Open filing evidence
2023-01-01 – 2023-12-311200000 USD20240314Open filing evidence
2023-07-01 – 2023-09-30300000 USD20241112Open filing evidence
2023-01-01 – 2023-09-30700000 USD20231108Open filing evidence
2023-04-01 – 2023-06-30200000 USD20230809Open filing evidence
2023-01-01 – 2023-06-30400000 USD20240807Open filing evidence
2023-01-01 – 2023-03-31200000 USD20240508Open filing evidence

Master Distribution Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30100000 USD20260806Open filing evidence
2026-01-01 – 2026-03-31200000 USD20260507Open filing evidence
2025-07-01 – 2025-09-30200000 USD20251106Open filing evidence
2025-01-01 – 2025-09-30700000 USD20251106Open filing evidence
2025-04-01 – 2025-06-30300000 USD20260806Open filing evidence
2025-01-01 – 2025-06-30500000 USD20260806Open filing evidence
2025-01-01 – 2025-03-31200000 USD20260507Open filing evidence
2024-01-01 – 2024-12-31800000 USD20260226Open filing evidence
2024-07-01 – 2024-09-30300000 USD20251106Open filing evidence
2024-01-01 – 2024-09-30600000 USD20241112Open filing evidence
2024-01-01 – 2024-03-31100000 USD20250507Open filing evidence
2023-01-01 – 2023-12-31300000 USD20260226Open filing evidence
2023-01-01 – 2023-09-30300000 USD20241112Open filing evidence
2023-01-01 – 2023-03-31100000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31100000 USD20250305Open filing evidence

Master Distribution Segment · Parts Sales · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-302500000 USD20231108Open filing evidence
2023-01-01 – 2023-09-307900000 USD20231108Open filing evidence
2023-01-01 – 2023-06-305400000 USD20230809Open filing evidence
2022-01-01 – 2022-12-311600000 USD20240314Open filing evidence

Master Distribution Segment · Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MasterDistributionSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-09-30300000 USD20231108Open filing evidence
2023-01-01 – 2023-03-31100000 USD20230510Open filing evidence

Material Handling Segment · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31174300000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31681500000 USD20240314Open filing evidence
2023-01-01 – 2023-03-31164800000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31570700000 USD20240314Open filing evidence
2021-01-01 – 2021-12-31467500000 USD20240314Open filing evidence

Material Handling Segment · Operating Segments · New And Used Equipment Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3194100000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31367600000 USD20240314Open filing evidence
2023-01-01 – 2023-03-3187500000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31305200000 USD20240314Open filing evidence
2021-01-01 – 2021-12-31258300000 USD20240314Open filing evidence

Material Handling Segment · Operating Segments · Rental Equipment Sales

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalEquipmentSalesMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-312500000 USD20240508Open filing evidence
2023-01-01 – 2023-12-315200000 USD20240314Open filing evidence
2023-01-01 – 2023-03-311400000 USD20240508Open filing evidence
2022-01-01 – 2022-12-315500000 USD20240314Open filing evidence
2021-01-01 – 2021-12-31800000 USD20240314Open filing evidence

Material Handling Segment · Operating Segments · Rental Revenue

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=altg:RentalRevenueMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3119000000 USD20240508Open filing evidence
2023-01-01 – 2023-12-3176400000 USD20240314Open filing evidence
2023-01-01 – 2023-03-3118000000 USD20240508Open filing evidence
2022-01-01 – 2022-12-3163500000 USD20240314Open filing evidence
2021-01-01 – 2021-12-3148400000 USD20240314Open filing evidence

Material Handling Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3133800000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31132800000 USD20240314Open filing evidence
2023-01-01 – 2023-03-3132900000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31112100000 USD20240314Open filing evidence
2021-01-01 – 2021-12-3194600000 USD20240314Open filing evidence

Material Handling Segment · Parts Sales · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=altg:MaterialHandlingSegmentMember;srt:ProductOrServiceAxis=altg:PartsSalesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3124900000 USD20240508Open filing evidence
2023-01-01 – 2023-03-3125000000 USD20240508Open filing evidence
2022-01-01 – 2022-12-3184400000 USD20240314Open filing evidence
2021-01-01 – 2021-12-3165400000 USD20240314Open filing evidence

Corporate And Other

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-31-3900000 USD20230510Open filing evidence
2022-01-01 – 2022-12-315300000 USD20230309Open filing evidence

Corporate And Other · Corporate Non Segment

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31-1100000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31-13200000 USD20240314Open filing evidence
2023-01-01 – 2023-03-31-3900000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31-1400000 USD20240314Open filing evidence

Corporate And Other · New And Used Equipment Sales

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-31-3500000 USD20230510Open filing evidence
2022-01-01 – 2022-12-313800000 USD20230309Open filing evidence

Corporate And Other · New And Used Equipment Sales · Corporate Non Segment

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateAndOtherMember;srt:ProductOrServiceAxis=altg:NewAndUsedEquipmentSalesMember;srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31-700000 USD20240508Open filing evidence
2023-01-01 – 2023-12-31-12100000 USD20240314Open filing evidence
2023-01-01 – 2023-03-31-3500000 USD20240508Open filing evidence
2022-01-01 – 2022-12-31-1200000 USD20240314Open filing evidence