Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (5,353)	$ (7,052)
Adjustments to reconcile net loss to net cash used in operating activities:
Inventory write-off	37	134
Depreciation and amortization	226	197
Amortization of operating lease right-of-use assets	150
Stock-based compensation	583	497
Interest cost	2	54
Gain on sale of equipment	(100)	0
Loss in joint venture	582	1,490
Changes in fair value of promissory note	0	1,024
Changes in operating assets and liabilities:
Accounts receivable	(645)	(629)
Inventory	(670)	(835)
Prepaid expenses and other current assets	(604)	(707)
Other assets	(28)	7
Accounts payable and accrued expenses	1,086	354
Deferred revenue	8	511
Accrued payroll and benefits	(51)	172
Operating lease liabilities	(136)
Net cash used in operating activities	(4,913)	(4,783)
Cash flows from investing activities:
Purchases of property and equipment	(723)	(346)
Investment in joint venture	(778)	(2,018)
Net cash used in investing activities	(1,401)	(2,364)
Cash flows from financing activities:
Proceeds from sale of equipment	100	0
Proceeds from stock option exercise	20	134
Proceeds from issuance of common stock	16,000	0
Cost associated with issuance of common stock	(280)	0
Net cash provided by financing activities	15,740	134
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	(248)	(25)
Net increase (decrease) in cash, cash equivalents and restricted cash	9,178	(7,038)
Cash and cash equivalents and restricted at beginning of period	33,435	9,500	$ 9,500
Cash and cash equivalents at end of period	43,113	2,462	33,435
Cash and cash equivalents	42,613	2,462	$ 33,435
Restricted cash	500	0
Supplemental disclosures of cash flow information:
Interest expense paid	180	150
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