Business Segments (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) Segment	Jun. 30, 2018 USD ($)
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	$ 7,725	$ 7,388	$ 15,208	$ 14,126
Cost of revenues	2,815	3,549	5,689	6,893
Gross profit	$ 4,910	$ 3,839	$ 9,519	$ 7,233
Gross profit %	63.60%	52.00%	62.60%	51.20%
Allocated operating expenses [Abstract]
Engineering and product development	$ 235	$ 269	$ 539	$ 607
Selling and marketing	2,958	2,378	6,024	5,249
Unallocated operating expenses	2,700	2,411	5,180	4,295
Total operating expenses	5,893	5,058	11,743	10,151
Loss from operations	(983)	(1,219)	(2,224)	(2,918)
Interest expense, net	(145)	(328)	(280)	(691)
Change in fair value of warrant liability	0	(23)	0	(22)
Other income (expenses), net	0	(19)	0	1
Loss before income taxes	(1,128)	(1,589)	(2,504)	(3,630)
Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	5,839	5,022	11,151	9,792
Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,886	2,366	4,057	4,334
Operating Segments [Member] | Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	5,839	5,022	11,151	9,792
Cost of revenues	1,733	1,919	3,526	3,908
Gross profit	$ 4,106	$ 3,103	$ 7,625	$ 5,884
Gross profit %	70.30%	61.80%	68.40%	60.10%
Allocated operating expenses [Abstract]
Engineering and product development	$ 198	$ 210	$ 440	$ 484
Selling and marketing	2,771	2,168	5,539	4,384
Unallocated operating expenses	0	0	0	0
Total operating expenses	2,969	2,378	5,979	4,868
Loss from operations	1,137	725	1,646	1,016
Interest expense, net	0	0	0	0
Change in fair value of warrant liability		0		0
Other income (expenses), net		0		0
Loss before income taxes	1,137	725	1,646	1,016
Operating Segments [Member] | Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,886	2,366	4,057	4,334
Cost of revenues	1,082	1,630	2,163	2,985
Gross profit	$ 804	$ 736	$ 1,894	$ 1,349
Gross profit %	42.60%	31.10%	46.70%	31.10%
Allocated operating expenses [Abstract]
Engineering and product development	$ 37	$ 59	$ 99	$ 123
Selling and marketing	187	210	485	865
Unallocated operating expenses	0	0	0	0
Total operating expenses	224	269	584	988
Loss from operations	580	467	1,310	361
Interest expense, net	0	0	0	0
Change in fair value of warrant liability		0		0
Other income (expenses), net		0		0
Loss before income taxes	$ 580	$ 467	$ 1,310	$ 361