CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss			$ (5,437)	$ (7,565)
Adjustments to reconcile net loss to net cash flows used in operating activities:
Depreciation and amortization			564	560
Amortization of operating lease right-of-use asset			110	123
Amortization of finance lease right-of-use asset			27	30
Amortization (accretion) of deferred financing costs, debt discounts and debt premiums			317	(50)
Gain on settlement of liability, net	$ 0	$ (1,084)	0	(1,251)
Loss on litigation				266
Loss on issuance of convertible notes				1,870
Loss on extinguishment of convertible notes			1,225
Stock-based compensation			329	307
Provision for losses on doubtful accounts			606	463
Warrant revaluation			(564)	582
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			(1,386)	(656)
Inventories			(49)	8
Other assets			195	177
Accounts payable			147	(1,316)
Operating lease liabilities			(106)	(117)
Accrued expenses and other liabilities			515	139
Net cash used in operating activities			(3,562)	(4,887)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment			(65)	(30)
Proceeds from sale of fixed asset			55
Net cash used in investing activities			(10)	(30)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on finance lease obligations			(33)	(28)
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			2,607	2,410
Proceeds from exercise of warrants				1,575
Proceeds from long-term debt			787
Proceeds from convertible notes				2,150
Principal payments on convertible notes				(50)
Principal payments on long-term debt			(284)	(231)
Net cash flows provided by financing activities			3,077	5,705
NET CHANGE IN CASH			(495)	788
CASH AT BEGINNING OF PERIOD			848	381	$ 381
CASH AT END OF PERIOD	$ 353	$ 1,169	353	1,169	$ 848
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid during the period for interest			20	18
SUPPLEMENTAL DISCLOSURE OF CONSULTING SERVICES OR ANY OTHER NON-CASH COMMON STOCK RELATED ACTIVITY
Equipment financed through finance lease obligations			21
Equipment financed through finance lease obligations				188
Conversion of interest on convertible debt into common stock			1,938	7,272
Conversion of interest on convertible debt into common stock			238
Beneficial conversion feature on issuance of convertible notes				1,792
Initial valuation of derivative liability recorded in conjunction with issuance of convertible notes				1,858
Liabilities exchanged for convertible notes				2,150
Write-off of beneficial conversion feature in conjunction with convertible note extinguishment			523
Right-of-use assets obtained in exchange for lease obligations			0	750
Write-off warrant liability in conjunction with warrant exercises				2,364
Write-off of debt discounts (net debt premiums) in conjunction with convertible note conversions			$ (270)	527
Write-off of derivative liability in conjunction with convertible note conversions				$ 477