Business Segments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) Segment	Mar. 31, 2020 USD ($)
Business Segments [Abstract]
Number of operating segments | Segment	2
Results of Operations from Business Segments [Abstract]
Revenues	$ 5,827	$ 6,730
Cost of revenues	2,114	2,331
Gross profit	$ 3,713	$ 4,399
Gross profit %	63.70%	65.40%
Allocated operating expenses [Abstract]
Engineering and product development	$ 384	$ 292
Selling and marketing	2,932	2,953
Unallocated operating expenses	2,789	2,102
Total operating expenses	6,105	5,347
Income (loss) from operations	(2,392)	(948)
Interest expense, net	(22)	1
Loss before income taxes	(2,414)	(947)
Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	4,679	5,701
Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,148	1,029
Operating Segments [Member] | Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	4,679	5,701
Cost of revenues	1,501	1,802
Gross profit	$ 3,178	$ 3,899
Gross profit %	67.90%	68.40%
Allocated operating expenses [Abstract]
Engineering and product development	$ 361	$ 274
Selling and marketing	2,802	2,797
Unallocated operating expenses	0	0
Total operating expenses	3,163	3,071
Income (loss) from operations	15	828
Interest expense, net	0	0
Loss before income taxes	15	828
Operating Segments [Member] | Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,148	1,029
Cost of revenues	613	529
Gross profit	$ 535	$ 500
Gross profit %	46.60%	48.60%
Allocated operating expenses [Abstract]
Engineering and product development	$ 23	$ 18
Selling and marketing	130	156
Unallocated operating expenses	0	0
Total operating expenses	153	174
Income (loss) from operations	382	326
Interest expense, net	0	0
Loss before income taxes	$ 382	$ 326