CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss			$ (9,462)	$ (9,119)
Adjustments to reconcile net loss to net cash flows used in operating activities:
Depreciation and amortization			838	972
Amortization of operating lease right-of-use asset			176
Amortization of finance lease right-of-use asset			46
(Accretion) amortization of deferred financing costs, debt discounts and debt premiums			(8)	70
Gain on extinguishment of debt		$ (284)		(284)
Gain on settlement of liability, net		(66)	(1,251)	(213)
Loss on settlement of equity instrument				385
Loss on litigation			266
Loss on issuance of convertible notes			1,870	1,040
Stock-based compensation			455	342
Impairment of goodwill		1,275		1,569
Provision for losses on doubtful accounts			724	394
Warrant revaluation			19	(617)
Loss on modification of warrants			1,128
Derivative revaluation			415	(116)
Changes in operating assets and liabilities:
Accounts receivable, net			(727)	(322)
Inventories, net			15	(14)
Other assets			302	13
Accounts payable			(1,624)	526
Operating lease liabilities			(170)
Accrued expenses and other liabilities			(13)	573
Net cash used in operating activities			(7,001)	(4,801)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment			(49)	(66)
Net cash used in investing activities			(49)	(66)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on finance lease obligations			(44)	(44)
Payment of deferred financing costs			(120)	(138)
Payment of fractional common shares in conjunction with reverse stock split			(1)
Issuance of common stock, net of issuance costs	$ 2,800		5,171	618
Proceeds from exercise of warrants			1,575	1,271
Proceeds from long-term debt				300
Proceeds from convertible notes			2,150	3,000
Principal payments on convertible notes			(50)
Principal payments on long-term debt			(329)	(342)
Net cash flows provided by financing activities			8,352	4,665
NET CHANGE IN CASH			1,302	(202)
CASH AT BEGINNING OF PERIOD			381	421	$ 421
CASH AT END OF PERIOD	$ 1,683	$ 219	1,683	219	$ 381
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid during the period for interest			27	37
SUPPLEMENTAL DISCLOSURE OF CONSULTING SERVICES OR ANY OTHER NON-CASH COMMON STOCK RELATED ACTIVITY
Purchases of equipment financed through accounts payable			4	31
Equipment financed through finance lease obligations			23	107
Deferred debt issuance cost financed through accounts payable				57
Discount of 9% on issuance of convertible bridge notes			188	297
Other current liabilities canceled in exchange for common shares				1,897
Beneficial conversion feature on issuance of convertible notes			1,792	1,604
Initial valuation of derivative liability recorded in conjunction with issuance of convertible notes			1,858	453
Initial valuation of warrant liability recorded in conjunction with issuance of convertible notes				1,925
Long-term debt exchanged for convertible notes				2,108
Liabilities exchanged for convertible notes			2,150
Prepaid insurance financed with loan			434	375
Accounts payable converted to long-term debt				74
Liability recorded related to equity purchase agreement repricing			460	460
Warrant liability canceled due to settlement of equity instruments				$ 456
Right-of-use assets obtained in exchange for lease obligations			750
Amounts included in measurement of lease liabilities			144
Write-off warrant liability in conjunction with warrant exercises			2,364
Write-off of debt discounts (net of debt premiums) in conjunction with convertible note conversions			590
Write-off of derivative liability in conjunction with convertible note conversions			477
Convertible Debt [Member]
SUPPLEMENTAL DISCLOSURE OF CONSULTING SERVICES OR ANY OTHER NON-CASH COMMON STOCK RELATED ACTIVITY
Conversion of convertible debt plus interest into common stock			$ 7,390