Business Segments and Geographic Data (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Segment	Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Segment	3
Number of dermatology procedures segments | Segment	2
Results of Operations from Business Segments [Abstract]
Revenues	$ 31,757	$ 18,495
Cost of revenues	12,636	13,719
Gross profit	$ 19,121	$ 4,776
Gross profit %	60.20%	25.80%
Allocated operating expenses [Abstract]
Engineering and product development	$ 1,929	$ 2,029
Selling and marketing expenses	13,152	9,194
Unallocated operating expenses	7,637	10,028
Total operating expenses	22,718	21,251
Income (loss) from operations	(3,597)	(16,475)
Interest expense, net	(4,900)	(10,200)
Change in fair value of warrant liability	5,396	1,814
Other income (expense), net	21	33
Income (loss) before income taxes	(3,080)	(24,828)
Assets	$ 43,193	$ 50,079
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	$ 24,558	$ 14,616
Cost of revenues	8,763	4,680
Gross profit	$ 15,795	$ 9,936
Gross profit %	64.30%	68.00%
Allocated operating expenses [Abstract]
Engineering and product development	$ 1,288	$ 676
Selling and marketing expenses	12,591	7,128
Unallocated operating expenses	0	0
Total operating expenses	13,879	7,804
Income (loss) from operations	1,916	2,132
Interest expense, net	0	0
Change in fair value of warrant liability	0	0
Other income (expense), net	0	0
Income (loss) before income taxes	1,916	2,132
Assets	34,612	40,420
Operating Segments [Member] | Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	7,065	3,591
Cost of revenues	3,506	1,989
Gross profit	$ 3,559	$ 1,602
Gross profit %	50.40%	44.60%
Allocated operating expenses [Abstract]
Engineering and product development	$ 210	$ 104
Selling and marketing expenses	375	193
Unallocated operating expenses	0	0
Total operating expenses	585	297
Income (loss) from operations	2,974	1,305
Interest expense, net	0	0
Change in fair value of warrant liability	0	0
Other income (expense), net	0	0
Income (loss) before income taxes	2,974	1,305
Assets	3,980	5,364
Operating Segments [Member] | Dermatology Imaging [Member]
Results of Operations from Business Segments [Abstract]
Revenues	134	288
Cost of revenues	367	7,050
Gross profit	$ (233)	$ (6,762)
Gross profit %	(173.90%)	(2347.80%)
Allocated operating expenses [Abstract]
Engineering and product development	$ 431	$ 1,249
Selling and marketing expenses	186	1,873
Unallocated operating expenses	0	0
Total operating expenses	617	3,122
Income (loss) from operations	(850)	(9,884)
Interest expense, net	0	0
Change in fair value of warrant liability	0	0
Other income (expense), net	0	0
Income (loss) before income taxes	(850)	(9,884)
Assets	265	661
Reportable Geographical Components [Member] | Domestic [Member]
Results of Operations from Business Segments [Abstract]
Revenues	25,536	14,724
Reportable Geographical Components [Member] | Foreign [Member]
Results of Operations from Business Segments [Abstract]
Revenues	6,221	3,771
Other Unallocated Assets [Member]
Allocated operating expenses [Abstract]
Assets	$ 4,336	$ 3,634