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, 2023	$ 109,310	$ 9,482	$ (1,884)	$ 52,978	$ 52,764	$ (4,030)
Beginning balance (in shares) at Mar. 31, 2023		31,607	(6,280)
Share-based compensation	9,399			9,399
Shares issued upon exercise of SSARs			$ 55	(55)
Shares issued upon exercise of SSARs ( in shares)			183
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(5,597)		$ (22)	(5,575)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(72)
Other common stock issuances, net			$ 53	(53)
Other common stock issuances, net (in shares)			177
Net income	83,234				83,234
Conversion of Series A preferred stock	35,000	$ 521		34,479
Conversion of Series A preferred stock (in shares)		1,735
Series A convertible preferred stock dividends	(1,204)				(1,204)
Unrealized translation adjustments	131					131
Ending balance at Dec. 31, 2023	230,273	$ 10,003	$ (1,798)	91,173	134,794	(3,899)
Ending balance (in shares) at Dec. 31, 2023		33,342	(5,992)
Beginning balance at Sep. 30, 2023	116,618	$ 9,482	$ (1,871)	55,154	57,939	(4,086)
Beginning balance (in shares) at Sep. 30, 2023		31,607	(6,236)
Share-based compensation	3,488			3,488
Shares issued upon exercise of SSARs			$ 28	(28)
Shares issued upon exercise of SSARs ( in shares)			93
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(1,875)		$ (7)	(1,868)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(22)
Other common stock issuances, net			$ 52	(52)
Other common stock issuances, net (in shares)			173
Net income	77,141				77,141
Conversion of Series A preferred stock	35,000	$ 521		34,479
Conversion of Series A preferred stock (in shares)		1,735
Series A convertible preferred stock dividends	(286)				(286)
Unrealized translation adjustments	187					187
Ending balance at Dec. 31, 2023	230,273	$ 10,003	$ (1,798)	91,173	134,794	(3,899)
Ending balance (in shares) at Dec. 31, 2023		33,342	(5,992)
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	(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
Series A convertible preferred stock dividends	0
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	(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	(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
Series A convertible preferred stock dividends	0
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	(5,380)