Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue, net	$ 4,493	$ 4,604	$ 13,319	$ 19,123
Commercial product and service
Disaggregation of Revenue [Line Items]
Revenue, net	3,960	3,623	11,556	8,127
Service
Disaggregation of Revenue [Line Items]
Revenue, net	300	400	1,400	1,800
Government
Disaggregation of Revenue [Line Items]
Revenue, net	533	981	1,763	2,996
Government Revenue From Government Agency
Disaggregation of Revenue [Line Items]
Revenue, net	500	1,000	1,600	3,000
Licensing
Disaggregation of Revenue [Line Items]
Revenue, net	$ 0	$ 0	$ 0	$ 8,000