CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Sales	$ 6,568	$ 3,691	$ 12,391	$ 7,088
Cost of sales	2,096	1,154	4,199	2,339
Gross profit	4,472	2,537	8,192	4,749
Other costs and expenses:
Research and development	888	763	1,698	1,277
Professional services	1,633	681	3,424	1,187
Salaries and related costs	3,333	1,813	6,554	3,615
Selling, general and administrative	3,083	2,213	6,184	4,323
Total other costs and expenses	8,937	5,470	17,860	10,402
Loss from operations	(4,465)	(2,933)	(9,668)	(5,653)
Interest income	403	0	826	0
Interest expense	0	(38)	0	(72)
Other losses	(200)	0	(225)	0
Change in value of derivative liabilities	0	46	0	20
Total other income (expense), net	203	8	601	(52)
Loss before income taxes	(4,262)	(2,925)	(9,067)	(5,705)
Income tax expense (benefit)	76	13	(48)	24
Loss from continuing operations	(4,338)	(2,938)	(9,019)	(5,729)
Income from discontinued operations, net of tax	0	2,666	0	4,522
Net loss	$ (4,338)	$ (272)	$ (9,019)	$ (1,207)
EPS from continuing operations:
Basic (in dollars per share)	$ (0.13)	$ (90.00)	$ (270.00)	$ (170.00)
Diluted (in dollars per share)	(0.13)	(90.00)	(270.00)	(170.00)
EPS from discontinued operations:
Basic (in dollars per share)	0.00	80.00	0.00	130.00
Diluted (in dollars per share)	0.00	80.00	0.00	130.00
EPS from total operations:
Basic (in dollars per share)	(0.13)	(10.00)	(270.00)	(40.00)
Diluted (in dollars per share)	$ (0.13)	$ (10.00)	$ (270.00)	$ (40.00)