Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (5,995)	$ 5,980	$ (11,348)	$ (1,072)
Adjustments to reconcile net loss to net cash used in operating activities:
Inventory write-off	19	60	56	194
Depreciation and amortization			465	405
Amortization of operating lease right-of-use assets			286
Perpetual licensing revenue from a related party			0	(8,000)
Stock-based compensation			1,219	1,008
Interest cost			4	108
Gain on sale of equipment			(110)	0
Loss in joint venture			1,266	1,127
Changes in fair value of promissory note	0	(1,629)	0	(605)
Changes in operating assets and liabilities:
Accounts receivable			941	33
Inventory			(2,692)	(2,745)
Prepaid expenses and other current assets			(97)	124
Other assets			(521)	15
Accounts payable and accrued expenses			904	657
Deferred revenue			(83)	102
Accrued payroll and benefits			160	37
Operating lease liabilities			(263)
Net cash used in operating activities			(9,813)	(8,612)
Cash flows from investing activities:
Purchases of property and equipment			(4,026)	(409)
Proceeds from sale of equipment			110	0
Investment in joint venture			(1,537)	(3,081)
Net cash used in investing activities			(5,453)	(3,490)
Cash flows from financing activities:
Proceeds from stock option exercise			56	134
Proceeds from issuance of common stock			16,000	5,000
Cost associated with issuance of common stock			(280)	0
Payment for taxes related to net share settlement of restricted stock units			(6)	0
Net cash provided by financing activities			15,770	5,134
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash			(443)	(44)
Net increase (decrease) in cash, cash equivalents and restricted cash			61	(7,012)
Cash, cash equivalents and restricted cash at beginning of period			33,435	9,500	$ 9,500
Cash and cash equivalents	33,496	1,988	33,496	1,988	33,435
Restricted cash at end of period	500	500	500	500
Cash, cash equivalents and restricted cash at end of period	$ 33,996	$ 2,488	33,996	2,488	$ 33,435
Supplemental disclosures of cash flow information:
Interest expense paid			362	316
Supplemental non-cash investing activity:
Equipment purchases			0	250
Supplemental non-cash financing activity:
Issuance of shares in connection with a service contract			0	500
Operating lease right-of-use asset obtained in exchange for operating lease liabilities			3,598	0
Development loan reduction related to perpetual licensing revenue			$ 0	$ 8,000