Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net loss	$ (21,001)	$ (34,067)	$ (13,164)
Adjustments to reconcile net loss to net cash provided by operating activities:
Impairments		23,740
Loss (gain) on disposal of property & equipment	44	(5)	17
Depreciation	2,832	2,574	2,504
Amortization of intangibles	1,959	2,541	2,567
Amortization of developed technology		12,561	12,602
Deferred income taxes	(959)	(356)	309
Share-based compensation	40,093	5,205	4,376
Changes in operating assets and liabilities:
Accounts receivable	10,363	(8,974)	(7,536)
Contract assets	(228)	794	1,662
Inventories	2,746	(1,830)	(50)
Prepaid expense and other current assets	(201)	1,545	(1,158)
Accounts payable	(7,016)	8,585	(3,512)
Contract liabilities	(3,971)	3,563	4,845
Accrued liabilities	1,187	(4,227)	5,029
Income taxes payable	340	(153)	(564)
Other changes, net	2,219	(921)	(686)
Net cash provided by operating activities	28,407	10,575	7,241
Investing activities
Capital expenditures	(1,389)	(3,420)	(3,318)
Capitalized software development costs			(2,189)
Additional (investments in) corporate-owned life insurance policies	(2)	(27)	(27)
Net cash used in investing activities	(1,391)	(3,447)	(5,534)
Preferred stock issuance proceeds, net of issuance costs	33,969
Payment of preferred stock dividends	(1,117)
Repurchase of common shares to satisfy employee tax withholding	(7,512)	(1,092)	(647)
Principal payments under long-term obligations	(24)	(24)	(120)
Net cash provided by (used in) financing activities	25,316	(1,116)	(767)
Effect of exchange rate changes on cash	195	(130)	(112)
Net increase in cash and cash equivalents	52,527	5,882	828
Cash and cash equivalents at beginning of period	46,653	40,771	39,943
Cash and cash equivalents at end of period	$ 99,180	$ 46,653	$ 40,771