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Loss Contingencies (Narratives) (Details) |  | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 02, 2012 USD ($) | Aug. 02, 2012 EUR (€) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) Rate | Sep. 30, 2023 EUR (€) | Dec. 31, 2022 USD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency Accrual |  |  |  |  |  |  | $ 21,103,000 | $ 22,575,000
Insurance Recoveries |  |  |  | $ (6,000) |  | $ (889,000) |  |
Loss Contingency Accrual, Product Liability, Gross |  |  |  | 21,809,000 |  |  | 21,103,000 |
Estimation of asbestos-related aggregate liability that is probable and estimable |  |  |  | 7,047,000 |  |  |  |
Estimation of product-related aggregate liability |  |  |  | 5,717,000 |  |  |  |
Loss Contingency Alleged Taxes Owed | $ 7,100,000 | € 6,700,000 |  | 2,000,000 | € 1,900,000 |  |  |
Loss Contingency Alleged Taxes Owed Including Penalties And Interest | $ 3,000,000 | € 2,800,000 |  | 2,300,000 | € 2,200,000 |  |  |
Accrual for Environmental Loss Contingencies |  |  |  | 739,000 |  |  |  |
Loss Contingency Accrual, Provision |  |  |  | 1,950,000 |  | 3,025,000 |  |
Loss Contingency Accrual, Payments |  |  |  | (1,238,000) |  | $ (3,608,000) |  |
Estimated Insurance Recoveries |  |  |  | (8,265,000) |  |  | (8,272,000) |
Loss Contingency Accrual, Product Liability, Net |  |  |  | $ 13,544,000 |  |  | $ 12,831,000 |
Financial Guarantee Insurance Contracts, Risk Management Activities, Mitigating Claim Liabilities, Policy |  |  |  | 75,000,000 | 75,000,000 |  |  |
Per Occurrence Limits on Self Insurance for General and Product Liability Coverage from inception through FY 2003 |  |  |  | $ 2,000,000 |  |  |  |
Per Occurrence Limits on Self Insurance for General and Product Liability Coverage from FY 2004 through current FY |  |  |  | $ 3,000,000 |  |  |  |
Indemnity Costs Covered by Insurance, Percentage | Rate |  |  |  | 100.00% |  |  |  |
Gross Defense Costs Prior to Retro Premiums Required by Settlement, Percentage | Rate |  |  |  | 65.00% |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Product Liability Contingency, Third Party Recovery |  |  |  | $ 2,000,000 |  |  |  |
Loss contingency period |  |  |  | 38 years | 38 years |  |  |
Estimation of asbestos-related aggregate liability that is probable and estimable |  |  |  | $ 5,300,000 |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Product Liability Contingency, Third Party Recovery |  |  |  | 6,000,000 |  |  |  |
Estimation of asbestos-related aggregate liability that is probable and estimable |  |  |  | 9,700,000 |  |  |  |
Litigation Settlement, Amount Awarded from Other Party |  |  |  | 1,650,000 |  |  |  |
Magnetek [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Estimation of asbestos-related aggregate liability that is probable and estimable |  |  |  | 781,000 |  |  |  |
Other Noncurrent Liabilities [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency Accrual |  |  |  | 16,909,000 |  |  |  |
Accrued Liabilities |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency Accrual, Product Liability, Gross |  |  |  | 4,900,000 |  |  |  |
Forecast [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Asbestos liability payments |  |  | $ 2,900,000 |  |  |  |  |
Loss settlement gross period |  |  | 12 months |  |  |  |  |
DEP [Member] | Magnetek [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Accrual for Environmental Loss Contingencies |  |  |  | $ 314,000 |  |  |  |

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