Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Operating Loss Carryforwards [Line Items]
Deferred Tax Liability Lease Asset	$ 15,706	$ 10,130
Deferred Tax Asset Lease Liability	$ 16,544	$ 10,872
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	$ 7,772	$ (2,482)	$ 810
Valuation allowance	(15,978)	(16,147)
Foreign net operating losses	2,943
Foreign subsidiary income	48,399	42,127	30,894
Amount accrued for the payment of interest and penalties	68	62	57
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	1,539	(700)	$ (700)
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	12,088	11,825
State and foreign net operating loss carryforwards	6,656	10,075
Undistributed Earnings of Foreign Subsidiaries	90,525
Foreign Earnings Repatriated	$ 720
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Percent	15.00%
Operating Loss Carryforwards, Valuation Allowance	$ 1,820
Magnetek [Member]
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	61,465
State and foreign net operating loss carryforwards	81,406
Federal
Operating Loss Carryforwards [Line Items]
Foreign net operating losses	$ 2,070	$ 4,322