Business Segments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) Segment	Mar. 31, 2018 USD ($)
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Number of operating segments | Segment	2
Results of Operations from Business Segments [Abstract]
Revenues	$ 7,483	$ 6,738
Cost of revenues	2,874	3,345
Gross profit	$ 4,609	$ 3,393
Gross profit %	61.60%	50.40%
Allocated operating expenses [Abstract]
Engineering and product development	$ 304	$ 338
Selling and marketing expenses	3,066	2,871
Unallocated operating expenses	2,480	1,884
Total operating expenses	5,850	5,093
Income (loss) from operations	(1,241)	(1,700)
Interest expense, net	(135)	(363)
Change in fair value of warrant liability (see Note 1)	0	1
Other income ,net	0	21
Income (loss) before income taxes	(1,376)	(2,041)
Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	5,312	4,770
Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	2,171	1,968
Operating Segments [Member] | Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	5,312	4,770
Cost of revenues	1,793	1,989
Gross profit	$ 3,519	$ 2,781
Gross profit %	66.20%	58.30%
Allocated operating expenses [Abstract]
Engineering and product development	$ 242	$ 274
Selling and marketing expenses	2,768	2,216
Unallocated operating expenses	0	0
Total operating expenses	3,010	2,490
Income (loss) from operations	509	291
Interest expense, net	0	0
Change in fair value of warrant liability (see Note 1)		0
Other income ,net		0
Income (loss) before income taxes	509	291
Operating Segments [Member] | Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	2,171	1,968
Cost of revenues	1,081	1,356
Gross profit	$ 1,090	$ 612
Gross profit %	50.20%	31.10%
Allocated operating expenses [Abstract]
Engineering and product development	$ 62	$ 64
Selling and marketing expenses	298	655
Unallocated operating expenses	0	0
Total operating expenses	360	719
Income (loss) from operations	730	(107)
Interest expense, net	0	0
Change in fair value of warrant liability (see Note 1)		0
Other income ,net		0
Income (loss) before income taxes	$ 730	$ (107)