Business Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Segment	Sep. 30, 2018 USD ($)
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	$ 7,480	$ 7,729	$ 22,688	$ 21,856
Cost of revenues	2,855	3,099	8,544	9,992
Gross profit	$ 4,625	$ 4,630	$ 14,144	$ 11,864
Gross profit %	61.80%	59.90%	62.30%	54.30%
Allocated operating expenses [Abstract]
Engineering and product development	$ 249	$ 224	$ 788	$ 831
Selling and marketing	2,887	2,487	8,911	7,737
Unallocated operating expenses	2,218	2,289	7,398	6,583
Total operating expenses	5,354	5,000	17,097	15,151
Loss from operations	(729)	(370)	(2,953)	(3,287)
Interest expense, net	(153)	(239)	(433)	(930)
Change in fair value of warrant liability	0	(79)	0	(101)
Loss before income taxes	(882)	(688)	(3,386)	(4,318)
Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	5,991	5,393	17,142	15,186
Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,489	2,366	5,546	6,670
Operating Segments [Member] | Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	5,991	5,393	17,142	15,186
Cost of revenues	1,966	1,794	5,492	5,702
Gross profit	$ 4,025	$ 3,599	$ 11,650	$ 9,484
Gross profit %	67.20%	66.70%	68.00%	62.50%
Allocated operating expenses [Abstract]
Engineering and product development	$ 226	$ 177	$ 666	$ 661
Selling and marketing	2,762	2,270	8,301	6,655
Unallocated operating expenses	0	0	0	0
Total operating expenses	2,988	2,447	8,967	7,316
Loss from operations	1,037	1,152	2,683	2,168
Interest expense, net	0	0	0	0
Change in fair value of warrant liability		0		0
Loss before income taxes	1,037	1,152	2,683	2,168
Operating Segments [Member] | Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,489	2,336	5,546	6,670
Cost of revenues	889	1,305	3,052	4,290
Gross profit	$ 600	$ 1,031	$ 2,494	$ 2,380
Gross profit %	40.30%	44.10%	45.00%	35.70%
Allocated operating expenses [Abstract]
Engineering and product development	$ 23	$ 47	$ 122	$ 170
Selling and marketing	125	217	610	1,082
Unallocated operating expenses	0	0	0	0
Total operating expenses	148	264	732	1,252
Loss from operations	452	767	1,762	1,128
Interest expense, net	0	0	0	0
Change in fair value of warrant liability		0		0
Loss before income taxes	$ 452	$ 767	$ 1,762	$ 1,128