Business Segments and Geographic Data (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($) Segment	Mar. 31, 2016 USD ($)	Dec. 31, 2016
Segment Reporting Information [Line Items]
Number of operating segments | Segment	3
Results of Operations from Business Segments [Abstract]
Revenues	$ 7,272	$ 7,620
Cost of revenues	2,733	3,422
Gross profit	$ 4,539	$ 4,198
Gross profit %	62.40%	55.10%
Allocated operating expenses [Abstract]
Engineering and product development	$ 475	$ 525
Selling and marketing expenses	3,150	3,710
Unallocated operating expenses	1,601	2,101
Total operating expenses	5,226	6,336
Operating loss before other income (expense), net	(687)	(2,138)
Interest expense, net	(1,346)	(1,218)
Change in fair value of warrant liability	(132)	1,985
Income (loss) before income taxes	$ (2,165)	(1,371)
Long Lived Assets [Member] | Geographic Concentration Risk [Member] | Domestic [Member]
Allocated operating expenses [Abstract]
Concentration risk percentage	100.00%		100.00%
Operating Segments [Member] | Dermatology Recurring Procedures [Member]
Results of Operations from Business Segments [Abstract]
Revenues	$ 5,731	5,528
Cost of revenues	2,042	2,304
Gross profit	$ 3,689	$ 3,224
Gross profit %	64.40%	58.30%
Allocated operating expenses [Abstract]
Engineering and product development	$ 416	$ 311
Selling and marketing expenses	2,948	3,510
Unallocated operating expenses	0	0
Total operating expenses	3,364	3,821
Operating loss before other income (expense), net	325	(597)
Interest expense, net	0	0
Change in fair value of warrant liability	0	0
Income (loss) before income taxes	325	(597)
Operating Segments [Member] | Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,537	1,990
Cost of revenues	691	951
Gross profit	$ 846	$ 1,039
Gross profit %	55.00%	52.20%
Allocated operating expenses [Abstract]
Engineering and product development	$ 58	$ 62
Selling and marketing expenses	202	108
Unallocated operating expenses	0	0
Total operating expenses	260	170
Operating loss before other income (expense), net	586	869
Interest expense, net	0	0
Change in fair value of warrant liability	0	0
Income (loss) before income taxes	586	869
Operating Segments [Member] | Dermatology Imaging [Member]
Results of Operations from Business Segments [Abstract]
Revenues	4	102
Cost of revenues	0	167
Gross profit	$ 4	$ (65)
Gross profit %	100.00%	(63.70%)
Allocated operating expenses [Abstract]
Engineering and product development	$ 1	$ 152
Selling and marketing expenses	0	92
Unallocated operating expenses	0	0
Total operating expenses	1	244
Operating loss before other income (expense), net	3	(309)
Interest expense, net	0	0
Change in fair value of warrant liability	0	0
Income (loss) before income taxes	3	(309)
Reportable Geographical Components [Member] | Domestic [Member]
Results of Operations from Business Segments [Abstract]
Revenues	6,189	5,622
Reportable Geographical Components [Member] | Foreign [Member]
Results of Operations from Business Segments [Abstract]
Revenues	$ 1,083	$ 1,998