CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (10,598)	$ (13,243)
Adjustments to reconcile net loss to net cash flows used in operating activities:
Depreciation and amortization	1,093	1,118
Amortization of operating lease right-of-use asset	213	231
Amortization of finance lease right-of-use asset	50	63
Amortization (accretion) of deferred financing costs, debt discounts and debt premiums	320	111
Loss on extinguishment of debt		20
Gain on settlement of liability, net	(77)	(1,437)
Loss on litigation		266
Loss on issuance of convertible notes		1,870
Loss on extinguishment of convertible notes	1,225
Stock-based compensation	703	668
Impairment of intangible assets and goodwill		1,590
Provision for losses on doubtful accounts	1,339	966
Warrant revaluation	(13)	(416)
Loss on modification of warrants		1,128
Derivative revaluation		415
Gain from sale of fixed asset	(55)
Changes in operating assets and liabilities:
Accounts receivable	(1,639)	(850)
Inventories	(166)	13
Other assets	(59)	427
Accounts payable	(243)	(1,884)
Operating lease liabilities	(209)	(223)
Accrued expenses and other liabilities	682	26
Net cash used in operating activities	(7,434)	(9,141)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(151)	(55)
Proceeds from sale of fixed asset	55
Net cash used in investing activities	(96)	(55)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on finance lease obligations	(56)	(46)
Payment of deferred financing costs		(120)
Payment of fractional common shares in conjunction with reverse stock split		(1)
Issuance of common stock, net of issuance costs	8,929	6,628
Proceeds from exercise of warrants		1,575
Proceeds from PPP Loan	787
Proceeds from convertible notes		2,150
Principal payments on convertible notes		(50)
Principal payments on long-term debt	(322)	(473)
Net cash flows provided by financing activities	9,338	9,663
NET CHANGE IN CASH	1,808	467
CASH AT BEGINNING OF PERIOD	848	381
CASH AT END OF PERIOD	2,656	848
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid during the period for interest	20	36
SUPPLEMENTAL DISCLOSURE OF CONSULTING SERVICES OR ANY OTHER NON-CASH COMMON STOCK RELATED ACTIVITY
Purchases of equipment financed through accounts payable		1
Equipment financed through finance lease obligations	22	23
Discount of 9% on issuance of convertible bridge notes		188
Conversion of convertible debt, plus interest, into common stock	2,176	7,553
Beneficial conversion feature on issuance of convertible notes		1,792
Initial valuation of warrant liability recorded in conjunction with issuance of convertible notes		1,858
Liabilities exchanged for convertible notes		2,150
Prepaid insurance financed with loan	23	434
Write-off of beneficial conversion feature in conjunction with convertible note extinguishment	523
Right-of-use assets obtained in exchange for operating lease obligations	0	750
Right-of-use assets obtained in exchange for finance lease obligations	29	0
Write-off warrant liability in conjunction with warrant exercises		2,364
Write-off of (debt premiums) debt discounts, net, in conjunction with convertible note conversions	$ (270)	731
Write-off of derivative liability in conjunction with convertible note conversions		$ 477