Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
OPERATING ACTIVITIES:
Net loss	$ (1,967,000)	$ (537,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property and equipment	17,000	7,000
Amortization of intangible assets, license and supply agreement and finance lease right-of-use asset	75,000	46,000
Stock-based compensation, including stock options and restricted stock	272,000	276,000
Inventory obsolescence charge	49,000	9,000
Extinguishment of PPP loan		(482,000)
Change in right of use asset	86,000	77,000
Gain on foreign currency transactions		(4,000)
Decrease (increase) in operating assets:
Accounts receivable	348,000	(354,000)
Inventory	67,000	616,000
Prepaid expenses and other current assets	(39,000)	130,000
Other assets	4,000
(Decrease) increase in operating liabilities:
Accounts payable	(437,000)	76,000
Accrued expenses	(183,000)	161,000
Lease liabilities	(89,000)	(76,000)
Net cash used in operating activities	(1,797,000)	(55,000)
INVESTING ACTIVITIES:
Purchase of property and equipment	(34,000)	(23,000)
Net cash used in investing activities	(34,000)	(23,000)
FINANCING ACTIVITIES:
Proceeds from sale of subsidiary preferred shares to noncontrolling interest	188,000
Principal payments on finance lease liability	(3,000)	(3,000)
Principal payments on equipment financing	(1,000)	(1,000)
Payments on secured note payable	(66,000)	(61,000)
Proceeds from exercise of options		62,000
Proceeds from exercise of warrants	163,000
Net cash provided by (used in) financing activities	281,000	(3,000)
Effect of exchange rates on cash and cash equivalents	(2,000)	(5,000)
Net decrease in cash and cash equivalents	(1,552,000)	(86,000)
Cash and cash equivalents, beginning of year	6,973,000	8,249,000
Cash and cash equivalents, end of year	5,421,000	8,163,000
Supplemental disclosure of cash flow information
Cash paid for interest expense	7,000	12,000
Cash paid for income taxes		21,000
Supplemental disclosure of noncash investing and financing activities
Right-of-use asset obtained in exchange for operating lease liability		$ 21,000