Business Segments and Geographic Data (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Segment	Sep. 30, 2016 USD ($)	Dec. 31, 2016
Segment Reporting Information [Line Items]
Number of operating segments | Segment			3
Results of Operations from Business Segments [Abstract]
Revenues	$ 7,480	$ 7,767	$ 23,454	$ 23,126
Cost of revenues	3,276	3,070	9,182	9,631
Gross profit	$ 4,204	$ 4,697	$ 14,272	$ 13,495
Gross profit %	56.20%	60.50%	60.90%	58.40%
Allocated operating expenses [Abstract]
Engineering and product development	$ 411	$ 382	$ 1,309	$ 1,541
Selling and marketing expenses	2,687	2,840	8,914	10,073
Unallocated operating expenses	1,678	1,880	4,999	5,882
Total operating expenses	4,776	5,102	15,222	17,496
Operating loss before other income (expense), net	(572)	(405)	(950)	(4,001)
Interest expense, net	(1,343)	(1,175)	(4,264)	(3,571)
Change in fair value of warrant liability	81	132	77	5,316
Loss on extinguishment of debt	(11,799)	0	(11,799)	0
Other income (expense), net	0	3	6	(1)
Loss before income taxes	(13,633)	(1,445)	$ (16,930)	(2,257)
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	5,720	6,205	$ 17,653	17,826
Cost of revenues	2,084	2,162	5,969	6,723
Gross profit	$ 3,636	$ 4,043	$ 11,684	$ 11,103
Gross profit %	63.60%	65.20%	66.20%	62.30%
Allocated operating expenses [Abstract]
Engineering and product development	$ 348	$ 343	$ 1,104	$ 977
Selling and marketing expenses	2,238	2,767	7,747	9,626
Unallocated operating expenses	0	0	0	0
Total operating expenses	2,586	3,110	8,851	10,603
Operating loss before other income (expense), net	1,050	933	2,833	500
Interest expense, net	0	0	0	0
Change in fair value of warrant liability	0	0	0	0
Loss on extinguishment of debt	0		0
Other income (expense), net		0	0	0
Loss before income taxes	1,050	933	2,833	500
Operating Segments [Member] | Dermatology Procedures Equipment [Member]
Results of Operations from Business Segments [Abstract]
Revenues	1,751	1,550	5,784	5,174
Cost of revenues	967	877	2,988	2,641
Gross profit	$ 784	$ 673	$ 2,796	$ 2,533
Gross profit %	44.80%	43.40%	48.30%	49.00%
Allocated operating expenses [Abstract]
Engineering and product development	$ 63	$ 31	$ 204	$ 147
Selling and marketing expenses	449	57	1,167	261
Unallocated operating expenses	0	0	0	0
Total operating expenses	512	88	1,371	408
Operating loss before other income (expense), net	272	585	1,425	2,125
Interest expense, net	0	0	0	0
Change in fair value of warrant liability	0	0	0	0
Loss on extinguishment of debt	0		0
Other income (expense), net		0	0	0
Loss before income taxes	272	585	1,425	2,125
Operating Segments [Member] | Dermatology Imaging [Member]
Results of Operations from Business Segments [Abstract]
Revenues	9	12	17	126
Cost of revenues	225	31	225	267
Gross profit	$ (216)	$ (19)	$ (208)	$ (141)
Gross profit %	(2400.00%)	(158.30%)	(1223.50%)	(111.90%)
Allocated operating expenses [Abstract]
Engineering and product development	$ 0	$ 8	$ 1	$ 417
Selling and marketing expenses	0	16	0	186
Unallocated operating expenses	0	0	0	0
Total operating expenses	0	24	1	603
Operating loss before other income (expense), net	(216)	(43)	(209)	(744)
Interest expense, net	0	0	0	0
Change in fair value of warrant liability	0	0	0	0
Loss on extinguishment of debt	0		0
Other income (expense), net		0	0	0
Loss before income taxes	(216)	(43)	(209)	(744)
Reportable Geographical Components [Member] | Domestic [Member]
Results of Operations from Business Segments [Abstract]
Revenues	6,337	6,287	19,612	18,444
Reportable Geographical Components [Member] | Foreign [Member]
Results of Operations from Business Segments [Abstract]
Revenues	$ 1,143	$ 1,480	$ 3,842	$ 4,682