Revenue, Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	$ 6,466	$ 7,097
Dermatology Recurring Procedures [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	4,498
Dermatology Procedures Equipment [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	1,968
Domestic [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	5,155
Domestic [Member] | Dermatology Recurring Procedures [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	4,498
Domestic [Member] | Dermatology Procedures Equipment [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	657
Foreign [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	1,311
Foreign [Member] | Dermatology Recurring Procedures [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	0
Foreign [Member] | Dermatology Procedures Equipment [Member]
Revenue from Contract with Customer, Excluding Assessed Tax [Abstract]
Revenues	$ 1,311