Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net revenues
Total net revenues	$ 933	$ 1,465
Cost of sales
Total costs of sales	516	776
Gross profit	417	689
Operating costs and expenses
Research and development	3,373	5,352
General and administrative	11,057	17,195
Sales and marketing	3,694	3,953
Total operating costs and expenses	18,124	26,500
Operating loss	(17,707)	(25,811)
Other income (expense)
Change in fair value of common stock warrant liability	4,532
Interest (expense) income, net	(12)	70
Other income, net	147	168
Net loss	$ (13,040)	$ (25,573)
Net loss per share, basic and diluted	$ (0.39)	$ (1.18)
Weighted average shares outstanding, basic and diluted	33,019,994	21,594,699
Products [Member]
Net revenues
Total net revenues	$ 428	$ 297
Cost of sales
Total costs of sales	340	273
Services [Member]
Net revenues
Total net revenues	505	1,168
Cost of sales
Total costs of sales	$ 176	$ 503