Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Goodwill by Segments [Abstract]
Goodwill	$ 8,803	$ 8,803	$ 8,803	$ 8,803	$ 8,803	$ 8,803	$ 8,803	$ 8,803	$ 8,803
Impairment of goodwill	0				0
Dermatology Recurring Procedures [Member]
Goodwill by Segments [Abstract]
Goodwill	7,958				7,958
Dermatology Procedures Equipment [Member]
Goodwill by Segments [Abstract]
Goodwill	$ 845				$ 845