Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
OPERATING ACTIVITIES:
Net loss	$ (537)	$ (1,098)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property and equipment	7	5
Amortization of intangible assets, license and supply agreement and finance lease right-of-use asset	46	45
Stock-based compensation, including stock options and restricted stock	276	222
Inventory obsolescence charge	9	1
Extinguishment of PPP loan	(482)
Change in fair value of contingent consideration		(42)
Accretion of contingent consideration		8
(Gain) loss on foreign currency transactions	(4)	2
Change in lease right-of-use assets	77	67
(Increase) decrease in operating assets:
Accounts receivable	(354)	(552)
Inventory	616	(1,088)
Prepaid expenses and other current assets	130	(80)
Other assets		(57)
Increase in operating liabilities:
Accounts payable	76	614
Accrued expenses	161	174
Lease liabilities	(76)	(61)
Net cash used in operating activities	(55)	(1,840)
INVESTING ACTIVITIES:
Purchase of property and equipment	(23)
Net cash used in investing activities	(23)
FINANCING ACTIVITIES:
Proceeds from issuance of common stock		6,771
Net payments from secured revolving credit facility		(65)
Payments on secured note payable	(61)	(56)
Principal payments on finance lease liability	(3)	(1)
Principal payments on equipment financing	(1)	(1)
Proceeds from exercise of warrants		51
Proceeds from exercise of options	62	2
Payment of contingent consideration		(63)
Net cash (used in) provided by financing activities	(3)	6,638
Effect of foreign exchange rates on cash	(5)	(2)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(86)	4,796
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	8,249	4,166
CASH AND CASH EQUIVALENTS, END OF PERIOD	8,163	8,962
Supplemental disclosure of cash flow information
Cash paid for interest expense	12	36
Cash paid for income taxes	21	11
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING INFORMATION
Right-of-use asset obtained in exchange for operating lease liability	21	201
Right-of-use asset obtained in exchange for finance lease liability		$ 17