Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues	$ 21,117	$ 14,012	$ 42,329	$ 27,782
Cost of revenues	15,596	10,248	31,768	22,441
Gross margin	5,521	3,764	10,561	5,341
Operating expenses:
Research and development	2,719	2,398	5,218	4,871
Selling, general and administrative	5,887	5,400	11,524	10,655
Amortization of acquisition-related intangibles	121	85	242	170
Total operating expenses	8,727	7,883	16,984	15,696
Operating loss	(3,206)	(4,119)	(6,423)	(10,355)
Change in fair value of warrants		1,145		4,092
Interest income, net	161	335	320	840
Other (expense)/income, net	(476)	1,520	(646)	976
Loss before income tax expense	(3,521)	(1,119)	(6,749)	(4,447)
Income tax expense (benefit)	191	(294)	380	(83)
Net loss	$ (3,712)	$ (825)	$ (7,129)	$ (4,364)
Net loss per common share
Basic (in dollars per share)	$ (0.17)	$ (0.04)	$ (0.33)	$ (0.21)
Diluted (in dollars per share)	$ (0.17)	$ (0.10)	$ (0.33)	$ (0.40)
Weighted average number of common shares outstanding
Basic (in shares)	21,860	20,656	21,775	20,586
Diluted (in shares)	21,860	20,723	21,775	20,736