Unaudited Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Restricted Stock Issued in-Lieu of Cash Bonuses [Member] Common Stock [Member]	Restricted Stock Issued in-Lieu of Cash Bonuses [Member] Additional Paid-in Capital [Member]	Restricted Stock Issued in-Lieu of Cash Bonuses [Member] Treasury Stock [Member]	Restricted Stock Issued in-Lieu of Cash Bonuses [Member] AOCI Attributable to Parent [Member]	Restricted Stock Issued in-Lieu of Cash Bonuses [Member] Retained Earnings [Member]	Restricted Stock Issued in-Lieu of Cash Bonuses [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Mar. 31, 2021							27,988
Balance at Mar. 31, 2021							$ 280	$ 1,121,495	$ (3,593)	$ (277)	$ (1,001,313)	$ 116,592
Issuance of common stock - restricted shares, net of forfeited shares (in shares)							318
Issuance of common stock - restricted shares, net of forfeited shares							$ 3	(3)	0	0	0	0
Stock-based compensation expense							$ 0	1,292	0	0	0	1,292
Issuance of stock for 401(k) match (in shares)							7
Issuance of stock for 401(k) match							$ 0	112	0	0	0	112
Cumulative translation adjustment							0	0	0	(63)	0	(63)
Net loss							$ 0	0	0	0	(5,403)	(5,403)
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture, Total (in shares)	111
Issuance of common stock - bonus payout	$ 1	$ 1,681	$ 0	$ 0	$ 0	$ 1,682
Issuance of common stock - Neeltran acquisition (in shares)							302
Issuance of common stock - Neeltran acquisition							$ 3	4,384	0	0	0	4,387
Repurchase of treasury stock							$ 0	0	(46)	0	0	(46)
Balance (in shares) at Jun. 30, 2021							28,726
Balance at Jun. 30, 2021							$ 287	1,128,961	(3,639)	(340)	(1,006,716)	118,553
Balance (in shares) at Mar. 31, 2021							27,988
Balance at Mar. 31, 2021							$ 280	1,121,495	(3,593)	(277)	(1,001,313)	116,592
Net loss												(14,161)
Balance (in shares) at Dec. 31, 2021							28,855
Balance at Dec. 31, 2021							$ 289	1,132,155	(3,639)	(296)	(1,015,474)	113,035
Balance (in shares) at Jun. 30, 2021							28,726
Balance at Jun. 30, 2021							$ 287	1,128,961	(3,639)	(340)	(1,006,716)	118,553
Stock-based compensation expense							$ 0	1,101	0	0	0	1,101
Issuance of stock for 401(k) match (in shares)							10
Issuance of stock for 401(k) match							$ 0	137	0	0	0	137
Cumulative translation adjustment							0	0	0	24	0	24
Net loss							$ 0	0	0	0	(4,434)	(4,434)
Issuance of common stock - ESPP (in shares)							10
Issuance of common stock - ESPP							$ 0	125	0	0	0	125
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture, Total (in shares)							47
Issuance of common stock - bonus payout							$ 1	597	0	0	0	598
Balance (in shares) at Sep. 30, 2021							28,793
Balance at Sep. 30, 2021							$ 288	1,130,921	(3,639)	(316)	(1,011,150)	116,104
Issuance of common stock - restricted shares, net of forfeited shares (in shares)							54
Issuance of common stock - restricted shares, net of forfeited shares							$ 1	(1)	0	0	0	0
Stock-based compensation expense							$ 0	1,120	0	0	0	1,120
Issuance of stock for 401(k) match (in shares)							8
Issuance of stock for 401(k) match							$ 0	115	0	0	0	115
Cumulative translation adjustment							0	0	0	20	0	20
Net loss							$ 0	0	0	0	(4,324)	(4,324)
Balance (in shares) at Dec. 31, 2021							28,855
Balance at Dec. 31, 2021							$ 289	1,132,155	(3,639)	(296)	(1,015,474)	113,035
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, net of forfeited shares (in shares)							(9)
Issuance of common stock - restricted shares, net of forfeited 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)
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, 2022							28,920
Balance at Mar. 31, 2022							$ 289	1,133,536	(3,639)	(291)	(1,020,506)	109,389
Net loss												(28,171)
Balance (in shares) at Dec. 31, 2022							29,928
Balance at Dec. 31, 2022							$ 299	1,137,622	(3,639)	1,603	(1,048,678)	87,207
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
Issuance of common stock - restricted shares, net of forfeited shares (in shares)							331
Issuance of common stock - restricted shares, net of forfeited shares							$ 3	(3)	0	0	0	0
Stock-based compensation expense							$ 0	1,019	0	0	0	1,019
Issuance of stock for 401(k) match (in shares)							33
Issuance of stock for 401(k) match							$ 1	178	0	0	0	179
Cumulative translation adjustment							0		0	2,026	0	2,026
Net loss							$ 0		0	0	(9,881)	(9,881)
Issuance of common stock - ESPP (in shares)							34
Issuance of common stock - ESPP							$ 0	127	0	0	0	127
Balance (in shares) at Sep. 30, 2022							29,337
Balance at Sep. 30, 2022							$ 293	1,136,028	(3,639)	1,798	(1,039,097)	95,383
Issuance of common stock - restricted shares, net of forfeited shares (in shares)							550
Issuance of common stock - restricted shares, net of forfeited shares							$ 6	(6)	0	0	0	0
Stock-based compensation expense							$ 0	1,440	0	0	0	1,440
Issuance of stock for 401(k) match (in shares)							41
Issuance of stock for 401(k) match							$ 0	160	0	0	0	160
Cumulative translation adjustment							0	0	0	(195)	0	(195)
Net loss							$ 0	0	0	0	(9,581)	(9,581)
Balance (in shares) at Dec. 31, 2022							29,928
Balance at Dec. 31, 2022							$ 299	$ 1,137,622	$ (3,639)	$ 1,603	$ (1,048,678)	$ 87,207