Fundies. English
Segment disclosures
Company overviewBELFUSE INC /NJ
Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.
Revenue · Reported segment facts
24 dimension combinations 276 retained observations 31 reported periods
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 · Corporate
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:CorporateNonSegmentMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-07-01 – 2025-09-30 | 0 | USD | 20251104 | Open filing evidence |
| 2025-01-01 – 2025-09-30 | 0 | USD | 20251104 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 0 | USD | 20250731 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 0 | USD | 20250731 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 0 | USD | 20251104 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 0 | USD | 20251104 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 0 | USD | 20250731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 0 | USD | 20250731 | Open filing evidence |
Operating Segments · Aerospace Defense And Rugged Solutions Segment
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 110457000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 210278000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 99821000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 91832000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 174954000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 83122000 | USD | 20260505 | Open filing evidence |
Operating Segments · Connectivity Solutions
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=belfa:ConnectivitySolutionsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-07-01 – 2025-09-30 | 61870000 | USD | 20251104 | Open filing evidence |
| 2025-01-01 – 2025-09-30 | 171802000 | USD | 20251104 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 59202000 | USD | 20250731 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 109932000 | USD | 20250731 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 55715000 | USD | 20251104 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 167822000 | USD | 20251104 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 57822000 | USD | 20250731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 112107000 | USD | 20250731 | Open filing evidence |
Operating Segments · Industrial Technology And Data Solutions Segment
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 100228000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 178898000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 78670000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 76467000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 145583000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 69116000 | USD | 20260505 | Open filing evidence |
Operating Segments · Magnetic Solutions
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=belfa:MagneticSolutionsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-07-01 – 2025-09-30 | 22704000 | USD | 20251104 | Open filing evidence |
| 2025-01-01 – 2025-09-30 | 63456000 | USD | 20251104 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 22298000 | USD | 20250731 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 40752000 | USD | 20250731 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 19243000 | USD | 20251104 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 49633000 | USD | 20251104 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 16832000 | USD | 20250731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 30390000 | USD | 20250731 | Open filing evidence |
Operating Segments · Power Solutions And Protection Segment
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=belfa:PowerSolutionsAndProtectionSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-07-01 – 2025-09-30 | 94406000 | USD | 20251104 | Open filing evidence |
| 2025-01-01 – 2025-09-30 | 264259000 | USD | 20251104 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 86799000 | USD | 20250731 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 169853000 | USD | 20250731 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 48680000 | USD | 20251104 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 167478000 | USD | 20251104 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 58551000 | USD | 20250731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 118798000 | USD | 20250731 | Open filing evidence |
Sales Channel Directly To Consumer · Aerospace Defense And Rugged Solutions Segment
Contract With Customer Sales Channel · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerSalesChannelAxis=us-gaap:SalesChannelDirectlyToConsumerMember;us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 85802000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 161889000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 76087000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 73990000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 137808000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 63818000 | USD | 20260505 | Open filing evidence |
Sales Channel Directly To Consumer · Industrial Technology And Data Solutions Segment
Contract With Customer Sales Channel · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerSalesChannelAxis=us-gaap:SalesChannelDirectlyToConsumerMember;us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 68512000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 123499000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 54987000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 51913000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 97535000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 45622000 | USD | 20260505 | Open filing evidence |
Sales Channel Through Intermediary · Aerospace Defense And Rugged Solutions Segment
Contract With Customer Sales Channel · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerSalesChannelAxis=us-gaap:SalesChannelThroughIntermediaryMember;us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 24655000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 48389000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 23734000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 17842000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 37146000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 19304000 | USD | 20260505 | Open filing evidence |
Sales Channel Through Intermediary · Industrial Technology And Data Solutions Segment
Contract With Customer Sales Channel · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerSalesChannelAxis=us-gaap:SalesChannelThroughIntermediaryMember;us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 31716000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 55399000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 23683000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 24554000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 48048000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 23494000 | USD | 20260505 | Open filing evidence |
Aerospace Defense And Rugged Solutions Segment
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 110457000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 210278000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 99821000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 91832000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 174954000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 83122000 | USD | 20260505 | Open filing evidence |
Aerospace Defense And Rugged Solutions Segment · Asia
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember;srt:StatementGeographicalAxis=srt:AsiaMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 1795000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 4358000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 2563000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 2285000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 5239000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 2954000 | USD | 20260505 | Open filing evidence |
Aerospace Defense And Rugged Solutions Segment · Europe
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember;srt:StatementGeographicalAxis=srt:EuropeMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-01-01 – 2025-03-31 | 25108000 | USD | 20260505 | Open filing evidence |
Aerospace Defense And Rugged Solutions Segment · North America
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember;srt:StatementGeographicalAxis=srt:NorthAmericaMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 69082000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 133260000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 64178000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 63669000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 118729000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 55060000 | USD | 20260505 | Open filing evidence |
Aerospace Defense And Rugged Solutions Segment · EMEA
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:AerospaceDefenseAndRuggedSolutionsSegmentMember;srt:StatementGeographicalAxis=us-gaap:EMEAMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 39580000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 72660000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 33080000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 25878000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 50986000 | USD | 20260804 | Open filing evidence |
Connectivity Solutions
Statement Business Segments
Multiple units reported for the same period; values are kept separate.
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:ConnectivitySolutionsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-01-01 – 2025-12-31 | 232286000 | USD | 20260224 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 50730000 | USD | 20250501 | Open filing evidence |
| 2024-01-01 – 2024-12-31 | 220370000 | USD | 20260224 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 55715000 | USD | 20241029 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 167822000 | USD | 20241029 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 57822000 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 112107000 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-03-31 | 54285000 | USD | 20250501 | Open filing evidence |
| 2023-01-01 – 2023-12-31 | 210572000 | USD | 20260224 | Open filing evidence |
| 2023-07-01 – 2023-09-30 | 51771000 | USD | 20241029 | Open filing evidence |
| 2023-01-01 – 2023-09-30 | 160010000 | USD | 20241029 | Open filing evidence |
| 2023-04-01 – 2023-06-30 | 54843000 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-06-30 | 108239000 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-03-31 | 53396000 | USD | 20240430 | Open filing evidence |
| 2022-01-01 – 2022-12-31 | 187085000 | USD | 20250228 | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 50253000 | USD | 20231103 | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 140062000 | USD | 20231103 | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 46096000 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 89809000 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 43713000 | USD | 20230505 | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 165027000 | USD | 20230310 | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 40344000 | USD | 20221104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 121446000 | USD | 20221104 | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 43046000 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 81102000 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 38056000 | USD | 20220506 | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 150731000 | USD | 20220314 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 38535000 | USD | 20211105 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 116543000 | USD | 20211105 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 38908000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 78007000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 39100000 | iso4217-usd | 20200508 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 39100000 | USD | 20210510 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 172348000 | iso4217-usd | 20200325 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 172348000 | USD | 20210312 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 44531000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 131354000 | USD | 20201106 | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 42536000 | USD | 20200810 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 86897000 | USD | 20200810 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 44361000 | iso4217-usd | 20200508 | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 186724000 | iso4217-usd | 20200325 | Open filing evidence |
Industrial Technology And Data Solutions Segment
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 100228000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 178898000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 78670000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 76467000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 145583000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 69116000 | USD | 20260505 | Open filing evidence |
Industrial Technology And Data Solutions Segment · Asia
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember;srt:StatementGeographicalAxis=srt:AsiaMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 15841000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 28844000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 13003000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 13008000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 25204000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 12196000 | USD | 20260505 | Open filing evidence |
Industrial Technology And Data Solutions Segment · Europe
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember;srt:StatementGeographicalAxis=srt:EuropeMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-01-01 – 2025-03-31 | 15709000 | USD | 20260505 | Open filing evidence |
Industrial Technology And Data Solutions Segment · North America
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember;srt:StatementGeographicalAxis=srt:NorthAmericaMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 68781000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 118955000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 50174000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 48386000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 89597000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 41211000 | USD | 20260505 | Open filing evidence |
Industrial Technology And Data Solutions Segment · EMEA
Statement Business Segments · Statement Geographical
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:IndustrialTechnologyAndDataSolutionsSegmentMember;srt:StatementGeographicalAxis=us-gaap:EMEAMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-04-01 – 2026-06-30 | 15606000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-06-30 | 31099000 | USD | 20260804 | Open filing evidence |
| 2026-01-01 – 2026-03-31 | 15493000 | USD | 20260505 | Open filing evidence |
| 2025-04-01 – 2025-06-30 | 15073000 | USD | 20260804 | Open filing evidence |
| 2025-01-01 – 2025-06-30 | 30782000 | USD | 20260804 | Open filing evidence |
Magnetic Solutions Segment
Statement Business Segments
Multiple units reported for the same period; values are kept separate.
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:MagneticSolutionsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-01-01 – 2025-12-31 | 86364000 | USD | 20260224 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 18454000 | USD | 20250501 | Open filing evidence |
| 2024-01-01 – 2024-12-31 | 68871000 | USD | 20260224 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 19243000 | USD | 20241029 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 49633000 | USD | 20241029 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 16832000 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 30390000 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-03-31 | 13558000 | USD | 20250501 | Open filing evidence |
| 2023-01-01 – 2023-12-31 | 115136000 | USD | 20260224 | Open filing evidence |
| 2023-07-01 – 2023-09-30 | 32049000 | USD | 20241029 | Open filing evidence |
| 2023-01-01 – 2023-09-30 | 94659000 | USD | 20241029 | Open filing evidence |
| 2023-04-01 – 2023-06-30 | 26843000 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-06-30 | 62610000 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-03-31 | 35767000 | USD | 20240430 | Open filing evidence |
| 2022-01-01 – 2022-12-31 | 178782000 | USD | 20250228 | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 51053000 | USD | 20231103 | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 138721000 | USD | 20231103 | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 53450000 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 87666000 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 34215000 | USD | 20230505 | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 160432000 | USD | 20230310 | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 46341000 | USD | 20221104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 115593000 | USD | 20221104 | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 40305000 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 69252000 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 28946000 | USD | 20220506 | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 133552000 | USD | 20220314 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 38164000 | USD | 20211105 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 104017000 | USD | 20211105 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 37152000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 65853000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 28701000 | iso4217-usd | 20200508 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 28701000 | USD | 20210510 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 156536000 | iso4217-usd | 20200325 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 156536000 | USD | 20210312 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 39659000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 118605000 | USD | 20201106 | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 40852000 | USD | 20200810 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 79108000 | USD | 20200810 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 38256000 | iso4217-usd | 20200508 | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 185407000 | iso4217-usd | 20200325 | Open filing evidence |
Power Solutions And Protection Segment
Statement Business Segments
Multiple units reported for the same period; values are kept separate.
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=belfa:PowerSolutionsAndProtectionSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-01-01 – 2025-12-31 | 356805000 | USD | 20260224 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 83054000 | USD | 20250501 | Open filing evidence |
| 2024-01-01 – 2024-12-31 | 245551000 | USD | 20260224 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 48680000 | USD | 20241029 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 167478000 | USD | 20241029 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 58551000 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 118798000 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-03-31 | 60247000 | USD | 20250501 | Open filing evidence |
| 2023-01-01 – 2023-12-31 | 314105000 | USD | 20260224 | Open filing evidence |
| 2023-07-01 – 2023-09-30 | 74862000 | USD | 20241029 | Open filing evidence |
| 2023-01-01 – 2023-09-30 | 245134000 | USD | 20241029 | Open filing evidence |
| 2023-04-01 – 2023-06-30 | 87091000 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-06-30 | 170272000 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-03-31 | 83181000 | USD | 20240430 | Open filing evidence |
| 2022-01-01 – 2022-12-31 | 288366000 | USD | 20250228 | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 76433000 | USD | 20231103 | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 206247000 | USD | 20231103 | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 71026000 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 129815000 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 58790000 | USD | 20230505 | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 218035000 | USD | 20230310 | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 60281000 | USD | 20221104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 159312000 | USD | 20221104 | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 55390000 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 99031000 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 43641000 | USD | 20220506 | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 181488000 | USD | 20220314 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 47793000 | USD | 20211105 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 129082000 | USD | 20211105 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 45112000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 81289000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 36177000 | iso4217-usd | 20200508 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 36177000 | USD | 20210510 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 163528000 | iso4217-usd | 20200325 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 163528000 | USD | 20210312 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 40289000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 127325000 | USD | 20201106 | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 44028000 | USD | 20200810 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 86800000 | USD | 20200810 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 42772000 | iso4217-usd | 20200508 | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 176053000 | iso4217-usd | 20200325 | Open filing evidence |
Corporate
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:CorporateMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2025-01-01 – 2025-12-31 | 0 | USD | 20260224 | Open filing evidence |
| 2025-01-01 – 2025-03-31 | 0 | USD | 20250501 | Open filing evidence |
| 2024-01-01 – 2024-12-31 | 0 | USD | 20260224 | Open filing evidence |
| 2024-07-01 – 2024-09-30 | 0 | USD | 20241029 | Open filing evidence |
| 2024-01-01 – 2024-09-30 | 0 | USD | 20241029 | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 0 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-06-30 | 0 | USD | 20240731 | Open filing evidence |
| 2024-01-01 – 2024-03-31 | 0 | USD | 20250501 | Open filing evidence |
| 2023-01-01 – 2023-12-31 | 0 | USD | 20250228 | Open filing evidence |
| 2023-07-01 – 2023-09-30 | 0 | USD | 20241029 | Open filing evidence |
| 2023-01-01 – 2023-09-30 | 0 | USD | 20241029 | Open filing evidence |
| 2023-04-01 – 2023-06-30 | 0 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-06-30 | 0 | USD | 20240731 | Open filing evidence |
| 2023-01-01 – 2023-03-31 | 0 | USD | 20240430 | Open filing evidence |
| 2022-01-01 – 2022-12-31 | 0 | USD | 20240311 | Open filing evidence |
| 2022-07-01 – 2022-09-30 | 0 | USD | 20231103 | Open filing evidence |
| 2022-01-01 – 2022-09-30 | 0 | USD | 20231103 | Open filing evidence |
| 2022-04-01 – 2022-06-30 | 0 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-06-30 | 0 | USD | 20230804 | Open filing evidence |
| 2022-01-01 – 2022-03-31 | 0 | USD | 20230505 | Open filing evidence |
| 2021-01-01 – 2021-12-31 | 0 | USD | 20230310 | Open filing evidence |
| 2021-07-01 – 2021-09-30 | 0 | USD | 20221104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 0 | USD | 20221104 | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 0 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 0 | USD | 20220805 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 0 | USD | 20220506 | Open filing evidence |
| 2020-01-01 – 2020-12-31 | 0 | USD | 20220314 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 0 | USD | 20211105 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 0 | USD | 20211105 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 0 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 0 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 0 | USD | 20210510 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 0 | USD | 20210312 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 0 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 0 | USD | 20201106 | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 0 | USD | 20200810 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 0 | USD | 20200810 | Open filing evidence |