Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock [Member]	Treasury stock [Member]	Capital in excess of Stated value [Member]	Retained earnings [Member]	Accumulated other comprehensive income (loss) [Member]
Beginning balance at Mar. 31, 2024	$ 236,477	$ 10,003	$ (1,791)	$ 94,680	$ 137,755	$ (4,170)
Beginning balance (in shares) at Mar. 31, 2024		33,342
Beginning balance (in shares) at Mar. 31, 2024			(5,965)
Share-based compensation	12,900			12,900
Shares issued upon exercise of SSARs			$ 175	(175)
Shares issued upon exercise of SSARs ( in shares)			581
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(2,841)		$ (9)	(2,832)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(28)
Other common stock issuances, net	453		$ 9	444
Other common stock issuances, net (in shares)			32
Net income	19,300				19,300
Unrealized translation adjustments	(9,498)					(9,498)
Ending balance at Dec. 31, 2024	256,791	$ 10,003	$ (1,616)	105,017	157,055	(13,668)
Ending balance (in shares) at Dec. 31, 2024		33,342
Ending balance (in shares) at Dec. 31, 2024			(5,380)
Beginning balance at Sep. 30, 2024	260,262	$ 10,003	$ (1,622)	102,275	153,225	(3,619)
Beginning balance (in shares) at Sep. 30, 2024		33,342
Beginning balance (in shares) at Sep. 30, 2024			(5,402)
Share-based compensation	4,173			4,173
Shares issued upon exercise of SSARs			$ 11	(11)
Shares issued upon exercise of SSARs ( in shares)			36
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(1,425)		$ (4)	(1,421)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(12)
Other common stock issuances, net			$ (1)	1
Other common stock issuances, net (in shares)			(2)
Net income	3,830				3,830
Unrealized translation adjustments	(10,049)					(10,049)
Ending balance at Dec. 31, 2024	256,791	$ 10,003	$ (1,616)	105,017	157,055	(13,668)
Ending balance (in shares) at Dec. 31, 2024		33,342
Ending balance (in shares) at Dec. 31, 2024			(5,380)
Beginning balance at Mar. 31, 2025	$ 265,886	$ 10,003	$ (1,600)	109,785	160,980	(13,282)
Beginning balance (in shares) at Mar. 31, 2025		33,342
Beginning balance (in shares) at Mar. 31, 2025	5,326,513		(5,327)
Share-based compensation	$ 15,803			15,803
Shares issued upon exercise of SSARs			$ 11	(11)
Shares issued upon exercise of SSARs ( in shares)			37
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(622)		$ (3)	(619)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(7)
Other common stock issuances, net	777		$ 16	761
Other common stock issuances, net (in shares)			52
Net income	26,497				26,497
Unrealized translation adjustments	4,782					4,782
Ending balance at Dec. 31, 2025	$ 313,123	$ 10,003	$ (1,576)	125,719	187,477	(8,500)
Ending balance (in shares) at Dec. 31, 2025		33,342
Ending balance (in shares) at Dec. 31, 2025	5,244,604		(5,245)
Beginning balance at Sep. 30, 2025	$ 296,747	$ 10,003	$ (1,593)	120,854	177,580	(10,097)
Beginning balance (in shares) at Sep. 30, 2025		33,342
Beginning balance (in shares) at Sep. 30, 2025			(5,300)
Share-based compensation	5,579			5,579
Shares issued upon exercise of SSARs			$ 6	(6)
Shares issued upon exercise of SSARs ( in shares)			18
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(697)		$ (2)	(695)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(5)
Other common stock issuances, net	0		$ 13	(13)
Other common stock issuances, net (in shares)			42
Net income	9,897				9,897
Unrealized translation adjustments	1,597					1,597
Ending balance at Dec. 31, 2025	$ 313,123	$ 10,003	$ (1,576)	$ 125,719	$ 187,477	$ (8,500)
Ending balance (in shares) at Dec. 31, 2025		33,342
Ending balance (in shares) at Dec. 31, 2025	5,244,604		(5,245)