Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Net income (loss)	$ (5,138)	$ 46,625	$ 48,429
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(1,157)	(433)	(4,273)
Other comprehensive income (loss), defined benefit plan, net of taxes	25,456	2,104	8,243
Change in derivatives qualifying as hedges, net of taxes of $1,859, $1,111, and $(2,636)	(5,723)	(3,305)	7,886
Total other comprehensive income (loss)	18,576	(1,634)	11,856
Comprehensive income	13,438	44,991	60,285
Pension Plans
Other comprehensive income (loss), net of tax:
Other comprehensive income (loss), defined benefit plan, net of taxes	25,585	812	8,058
Postretirement Benefit Plans
Other comprehensive income (loss), net of tax:
Other comprehensive income (loss), defined benefit plan, net of taxes	(102)	(94)	(66)
Defined Benefit Postretirement Life Insurance
Other comprehensive income (loss), net of tax:
Other comprehensive income (loss), defined benefit plan, net of taxes	$ (27)	$ 1,386	$ 251