Property and Equipment, net (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 5,876	$ 6,014
Accumulated depreciation and amortization	(4,888)	(4,708)
Total property and equipment, net	988	1,306
Less Assets held for sale	(988)
Total property and equipment, net	77	1,306
Lasers In Service [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, gross
Equipment, Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	5,005	5,147
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	433	424
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 438	$ 443