Unaudited Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Mar. 31, 2022	28,920
Balance at Mar. 31, 2022	$ 289	$ 1,133,536	$ (3,639)	$ (291)	$ (1,020,506)	$ 109,389
Issuance of common stock - restricted shares (in shares)	9
Issuance of common stock - restricted shares	$ 0	0	0	0	0	0
Stock-based compensation expense		1,033				1,033
Issuance of stock for 401(k) match (in shares)	28
Issuance of stock for 401(k) match		138				138
Cumulative translation adjustment				63		63
Net loss					(8,710)	(8,710)
Issuance of common stock - restricted shares, net of forfeited shares (in shares)	(9)
Balance (in shares) at Jun. 30, 2022	28,939
Balance at Jun. 30, 2022	$ 289	1,134,707	(3,639)	(228)	(1,029,216)	101,913
Balance (in shares) at Mar. 31, 2023	29,937
Balance at Mar. 31, 2023	$ 299	1,139,113	(3,639)	1,571	(1,055,547)	81,797
Issuance of common stock - restricted shares (in shares)	699
Issuance of common stock - restricted shares	$ 7	(7)	0	0	0	0
Stock-based compensation expense		1,357				1,357
Issuance of stock for 401(k) match (in shares)	33
Issuance of stock for 401(k) match		163				164
Cumulative translation adjustment				(2)		(2)
Net loss					(5,398)	(5,398)
Issuance of common stock - restricted shares, net of forfeited shares (in shares)	(699)
Balance (in shares) at Jun. 30, 2023	30,669
Balance at Jun. 30, 2023	$ 307	$ 1,140,626	$ (3,639)	$ 1,569	$ (1,060,945)	$ 77,918