CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited Consolidated Condensed) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities:
Net (loss) income	$ (1,159)	$ 62
Adjustments to reconcile net income to cash used in operating activities:
Depreciation and amortization	174	136
Stock-based compensation	209	148
Changes in assets and liabilities related to operations:
Trade accounts receivable	151	(1,337)
Inventories	721	(2,464)
Prepaid expenses and other assets	(67)	(94)
Accounts payable	(768)	1,347
Accrued expenses	111	15
Deferred revenue	(346)	65
Change in ROU asset and lease liability, net	192	347
Net cash used in operating activities	(782)	(1,775)
Investing activities:
Acquisition of equipment and leasehold improvements	(21)	(378)
Net cash used in investing activities	(21)	(378)
Financing activities:
Principal payments on finance leases		(38)
Proceeds from line of credit, related party	7,150	8,125
Payments to line of credit, related party	(7,540)	(5,767)
Proceeds from exercise of stock options	101	73
Net cash (used in) provided by financing activities	(289)	2,393
Increase in cash and cash equivalents	(1,092)	240
Cash and cash equivalents at beginning of period	2,186	657
Cash and cash equivalents at end of period	1,094	897
Supplemental cash flow information:
Interest paid	97	27
Supplemental non-cash investing and financing activities:
Accounts payable incurred for the purchase of equipment and leasehold improvements	$ 437	$ 40