Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Directors	Common Stock	Treasury Stock	Additional  Paid-in Capital	Additional  Paid-in Capital Directors	Retained Earnings	Accumulated Other  Comprehensive  Loss
Beginning balance at Mar. 31, 2022	$ 772,803		$ 285	$ 0	$ 506,074		$ 316,343	$ (49,899)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48,429						48,429
Dividends declared	(8,014)						(8,014)
Change in foreign currency translation adjustment	(4,273)							(4,273)
Change in derivative qualifying as hedges, net of tax	7,886							7,886
Change in pension liability and postretirement obligations, net of tax	8,243							8,243
Stock compensation expense	9,231	$ 1,194			9,231	$ 1,194
Stock options exercised	713				713
Treasury stock purchased	(1,001)			(1,001)
Restricted stock units released	(1,414)		1		(1,415)
Ending balance at Mar. 31, 2023	833,797		286	(1,001)	515,797		356,758	(38,043)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	46,625						46,625
Dividends declared	(8,055)						(8,055)
Change in foreign currency translation adjustment	(433)							(433)
Change in derivative qualifying as hedges, net of tax	(3,305)							(3,305)
Change in pension liability and postretirement obligations, net of tax	2,104							2,104
Stock compensation expense	10,865	1,174			10,865	1,174
Stock options exercised	1,597		1		1,596
Restricted stock units released	(2,306)		1		(2,307)
Ending balance at Mar. 31, 2024	882,063		288	(1,001)	527,125		395,328	(39,677)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(5,138)						(5,138)
Dividends declared	(8,030)						(8,030)
Change in foreign currency translation adjustment	(1,157)							(1,157)
Change in derivative qualifying as hedges, net of tax	(5,723)							(5,723)
Change in pension liability and postretirement obligations, net of tax	25,456							25,456
Stock compensation expense	5,199	$ 1,057			5,199	$ 1,057
Stock options exercised	372				372
Treasury stock purchased	(10,000)		1	(9,999)
Restricted stock units released	(2,004)		(1)		(2,003)
Ending balance at Mar. 31, 2025	$ 882,095		$ 286	$ (11,000)	$ 531,750		$ 382,160	$ (21,101)