Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash Flows from Operating Activities
Net Income(loss )	$ (2,768)	$ 2,599
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	405	366
Amortization of right-of-use assets	414	362
Inventory reserve	78	(9)
Stock-based compensation	2,317	460
Loss (gain) on disposal of fixed assets		4
Increase/(decrease) in cash resulting from changes in:
Accounts receivable, net	(2,564)	(2,998)
Inventory	(648)	(1,320)
Prepaid expenses and other current assets	(49)	1,454
Other non-current assets	(16)	(13)
Accounts payable	375	(333)
Accrued liabilities	1,524	272
Net cash (used in)/provided by operating activities	(932)	844	$ 800
Cash Flows from Investing Activities:
Purchases of fixed assets	(98)	(712)
Net cash used in investing activities	(98)	(712)
Cash Flows from Financing Activities:
Proceeds from exercise of common stock warrants		18
Proceeds from exercise of overallotment warrants		1
Payments on finance leases	(268)	(321)
Net cash used in financing activities	(268)	(302)
Net decrease in Cash	(1,298)	(170)
Cash at Beginning of Period	28,864	14,368	14,368
Cash at End of Period	27,566	14,198	$ 28,864
Supplemental Disclosures of Cash Flow Information:
Interest	$ 61	$ 65