CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue, net of contractual allowances and adjustments	$ 1,482	$ 917
less allowance for doubtful accounts	(266)	(204)
Net sales	1,216	713
Total cost of sales	1,091	675
Gross profit	125	38
OPERATING EXPENSES:
Operating expenses	2,328	2,097
OPERATING LOSS	(2,203)	(2,059)
OTHER INCOME (EXPENSE):
Interest expense, net	(713)	(23)
Warrant revaluation	936	240
Derivative revaluation		23
Gain on settlement of liability, net		167
Loss on extinguishment of convertible notes	(1,225)
Total other expenses	(1,002)	407
LOSS BEFORE INCOME TAXES	(3,205)	(1,652)
NET LOSS	(3,205)	(1,652)
Deemed dividends related to beneficial conversion feature of preferred stock and fair value of warrant down round features	(3,344)
TOTAL DIVIDENDS	(3,344)
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	$ (6,549)	$ (1,652)
BASIC AND DILUTED LOSS PER COMMON SHARE (IN DOLLARS PER SHARE)	$ (0.78)	$ (0.48)
BASIC AND DILUTED WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING (IN SHARES)	8,371,956	3,441,893
Service revenue, net [Member]
Revenue, net of contractual allowances and adjustments	$ 1,458	$ 910
less allowance for doubtful accounts	(266)	(204)
Net sales	1,192	706
Other [Member]
Revenue, net of contractual allowances and adjustments	$ 24	$ 7