CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Sales	$ 5,823	$ 3,397
Cost of sales	2,103	1,185
Gross profit	3,720	2,212
Other costs and expenses:
Research and development	810	514
Professional services	1,791	506
Salaries and related costs	3,221	1,802
Selling, general and administrative	3,101	2,110
Total other costs and expenses	8,923	4,932
Loss from operations	(5,203)	(2,720)
Interest income	423	0
Interest expense	0	(34)
Other losses	(25)	0
Change in value of derivative liabilities	0	(26)
Total other income (expense), net	398	(60)
Loss before income taxes	(4,805)	(2,780)
Income tax (benefit) expense	(124)	11
Loss from continuing operations	(4,681)	(2,791)
Income from discontinued operations, net of tax	0	1,856
Net loss	$ (4,681)	$ (935)
EPS from continuing operations:
Basic (in dollars per share)	$ (0.14)	$ (0.08)
Diluted (in dollars per share)	(0.14)	(0.08)
EPS from discontinued operations:
Basic (in dollars per share)	0.00	0.05
Diluted (in dollars per share)	0.00	0.05
EPS from total operations:
Basic (in dollars per share)	(0.14)	(0.03)
Diluted (in dollars per share)	$ (0.14)	$ (0.03)