Commitments and Contingencies - Narrative (Details) - USD ($)	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitment to acquire equipment and services	$ 7,400,000
Cumulative purchases made to date	7,300,000
Reimbursement received from government agency	7,300,000
Amount purchased	50,000
Remaining accounts payable to vendors	0
Contract for epiwafer technology		$ 900,000
Option in addition to contract for epiwafer technology		$ 500,000
Amounts billed and received on government contracts	$ 327,000