Consolidated Statements of Shareholders' Equity - 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, 2023	$ 109,310	$ 9,482	$ (1,884)	$ 52,978	$ 52,764	$ (4,030)
Beginning balance (in shares) at Mar. 31, 2023		31,607
Beginning balance (in shares) at Mar. 31, 2023			(6,280)
Share-based compensation	13,851			13,851
Shares issued upon exercise of SSARs			$ 63	(63)
Shares issued upon exercise of SSARs, Shares			211
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares	(6,535)		$ (25)	(6,510)
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares (in shares)			(81)
Other common stock issuances, net			$ 55	(55)
Other common stock issuances, net (in shares)			185
Net income	86,195				86,195
Conversion of Series A preferred stock	35,000	$ 521		34,479
Conversion of Series A preferred stock, Shares		1,735
Series A convertible preferred stock dividends	(1,204)				(1,204)
Unrealized translation adjustments	(140)					(140)
Ending balance at Mar. 31, 2024	236,477	$ 10,003	$ (1,791)	94,680	137,755	(4,170)
Ending balance (in shares) at Mar. 31, 2024		33,342
Ending balance (in shares) at Mar. 31, 2024			(5,965)
Share-based compensation	17,853			17,853
Shares issued upon exercise of SSARs			$ 190	(190)
Shares issued upon exercise of SSARs, Shares			630
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares	(3,583)		$ (11)	(3,572)
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares (in shares)			(34)
Other common stock issuances, net	1,026		$ 12	1,014
Other common stock issuances, net (in shares)			42
Net income	23,225				23,225
Series A convertible preferred stock dividends	0
Unrealized translation adjustments	(9,112)					(9,112)
Ending balance at Mar. 31, 2025	$ 265,886	$ 10,003	$ (1,600)	109,785	160,980	(13,282)
Ending balance (in shares) at Mar. 31, 2025		33,342
Ending balance (in shares) at Mar. 31, 2025	5,326,513		(5,327)
Share-based compensation	$ 21,691			21,691
Shares issued upon exercise of SSARs			$ 19	(19)
Shares issued upon exercise of SSARs, Shares			62
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(1,274)		$ (5)	(1,269)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(14)
Other common stock issuances, net	1,476		$ 32	(1,444)
Other common stock issuances, net (in shares)			103
Net income	38,791				38,791
Series A convertible preferred stock dividends	0
Unrealized translation adjustments	221					221
Ending balance at Mar. 31, 2026	$ 326,791	$ 10,003	$ (1,554)	$ 131,632	$ 199,771	$ (13,061)
Ending balance (in shares) at Mar. 31, 2026	5,175,810	33,342	(5,176)