CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows from Operating Activities:
Net (loss)	$ (3,626)	$ (3,976)
Adjustments to reconcile net loss to net cash (used) by operating activities:
Loan forgiveness from Paycheck Protection Program	(204)
Amortization of right-of-use assets	214	231
Depreciation and amortization		2
Asset valuation allowances	6	(22)
Changes in assets and liabilities:
Accounts receivable	(609)	(185)
Inventory	(151)	(43)
Prepaid purchases	220	(111)
Prepaid expenses and other current assets	(101)	38
Other assets	4
Accounts payable and other current liabilities	(30)	196
Right of use assets-operating	(403)
Short term lease liabilities	59	(89)
Long term lease liabilities	118	(153)
Due to affiliate	(1)	1
Income taxes payable	(223)	(197)
Deferred revenue	15	15
Net cash (used) by operating activities	(4,712)	(4,293)
Cash Flows From Investing Activities:
Proceeds from sale of short-term investments	25,045	28,101
Purchases of short-term investments		(25,045)
Disposals to property and equipment		2
Additions to property and equipment	(2)
Net cash provided by investing activities	25,043	3,058
Cash Flows from Financing Activities:
Proceeds from Paycheck Protection Program loan		204
Net cash provided by financing activities		204
Net increase in cash and cash equivalents	20,331	(1,031)
Cash and cash equivalents at beginning of the year	5,245	6,276
Cash and cash equivalents at end of the year	25,576	5,245
Cash paid for:
Interest	11	7
Income taxes	$ 222	$ 197