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, 2021	$ 79,876	$ 9,482	$ (2,278)	$ 37,257	$ 35,376	$ 39
Beginning balance (in shares) at Mar. 31, 2021		31,607	(7,596)
Share-based compensation	14,549			14,549
Restricted shares issued, net			$ 34	(34)
Restricted shares issued, net (in shares)			113
Shares Issued Upon Exercise of SSARs			$ 190	(190)
Shares issued upon exercise of SSARs, Shares			636
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares	(1,628)		$ (9)	(1,619)
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares (in shares)			(32)
Net Income (Loss)	6,478				6,478
Series A convertible preferred stock dividends	(1,836)				(1,836)
Unrealized translation adjustments	(95)					(95)
Ending balance at Mar. 31, 2022	97,344	$ 9,482	$ (2,063)	49,963	40,018	(56)
Ending balance (in shares) at Mar. 31, 2022		31,607	(6,879)
Share-based compensation	12,778			12,778
Restricted shares issued, net			$ 99	(99)
Restricted shares issued, net (in shares)			331
Shares Issued Upon Exercise of SSARs			$ 121	(121)
Shares issued upon exercise of SSARs, Shares			403
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares	(9,584)		$ (41)	(9,543)
Shares withheld for taxes upon exercise of SSARs or vesting of restricted shares (in shares)			(135)
Net Income (Loss)	14,582				14,582
Series A convertible preferred stock dividends	(1,836)				(1,836)
Unrealized translation adjustments	(3,974)					(3,974)
Ending balance at Mar. 31, 2023	109,310	$ 9,482	$ (1,884)	52,978	52,764	(4,030)
Ending balance (in shares) at Mar. 31, 2023		31,607	(6,280)
Share-based compensation	13,851			13,851
Restricted shares issued, net			$ 52	(52)
Restricted shares issued, net (in shares)			174
Shares issued upon vesting of restricted stock units			$ 3	(3)
Shares issued upon vesting of restricted stock units, Shares			11
Conversion of Series A preferred stock	35,000	$ 521		34,479
Conversion of Series A preferred stock, Shares		1,735
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)
Net Income (Loss)	86,195				86,195
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	(5,965)