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	5,911			5,911
Shares issued upon exercise of SSARs			$ 27	(27)
Shares issued upon exercise of SSARs ( in shares)			90
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(3,722)		$ (15)	(3,707)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(50)
Other common stock issuances, net			$ 1	(1)
Other common stock issuances, net (in shares)			4
Net Income (Loss)	6,093				6,093
Series A convertible preferred stock dividends	(918)				(918)
Unrealized translation adjustments	(56)					(56)
Ending balance at Sep. 30, 2023	116,618	$ 9,482	$ (1,871)	55,154	57,939	(4,086)
Ending balance (in shares) at Sep. 30, 2023		31,607	(6,236)
Beginning balance at Jun. 30, 2023	111,686	$ 9,482	$ (1,877)	53,735	53,853	(3,507)
Beginning balance (in shares) at Jun. 30, 2023		31,607	(6,255)
Share-based compensation	2,534			2,534
Shares issued upon exercise of SSARs			$ 12	(12)
Shares issued upon exercise of SSARs ( in shares)			40
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(1,109)		$ (4)	(1,105)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(13)
Other common stock issuances, net			$ (2)	2
Other common stock issuances, net (in shares)			(8)
Net Income (Loss)	4,545				4,545
Series A convertible preferred stock dividends	(459)				(459)
Unrealized translation adjustments	(579)					(579)
Ending balance at Sep. 30, 2023	116,618	$ 9,482	$ (1,871)	55,154	57,939	(4,086)
Ending balance (in shares) at Sep. 30, 2023		31,607	(6,236)
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	8,727			8,727
Shares issued upon exercise of SSARs			$ 164	(164)
Shares issued upon exercise of SSARs ( in shares)			545
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(1,416)		$ (5)	(1,411)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(16)
Other common stock issuances, net	453		$ 10	443
Other common stock issuances, net (in shares)			34
Net Income (Loss)	15,470				15,470
Series A convertible preferred stock dividends	0
Unrealized translation adjustments	551					551
Ending balance at Sep. 30, 2024	260,262	$ 10,003	$ (1,622)	102,275	153,225	(3,619)
Ending balance (in shares) at Sep. 30, 2024		33,342	(5,402)
Beginning balance at Jun. 30, 2024	254,171	$ 10,003	$ (1,642)	98,277	151,861	(4,328)
Beginning balance (in shares) at Jun. 30, 2024		33,342	(5,470)
Share-based compensation	3,877			3,877
Shares issued upon exercise of SSARs			$ 14	(14)
Shares issued upon exercise of SSARs ( in shares)			47
Shares withheld for taxes upon exercise of SSARs or vesting of other grants	(312)		$ (1)	(311)
Shares withheld for taxes upon exercise of SSARs or vesting of other grants (in shares)			(2)
Other common stock issuances, net	453		$ 7	446
Other common stock issuances, net (in shares)			23
Net Income (Loss)	1,364				1,364
Series A convertible preferred stock dividends	0
Unrealized translation adjustments	709					709
Ending balance at Sep. 30, 2024	$ 260,262	$ 10,003	$ (1,622)	$ 102,275	$ 153,225	$ (3,619)
Ending balance (in shares) at Sep. 30, 2024		33,342	(5,402)