Property and Equipment, net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 18,437	$ 17,008
Accumulated depreciation and amortization	(10,734)	(6,828)
Property and equipment, net	7,703	10,180
Depreciation and related amortization expense	4,341	4,551
Impairment of long-lived assets	(196)
Net book value written off	0	124
Irvington New York facility [Member]
Property, Plant and Equipment [Line Items]
Amount of disposed of leasehold improvements, machinery and equipment and furniture and fixtures		3,933
Amount of accumulated depreciation and amortization		(3,809)
Lasers Placed-In-Service [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17,820	16,712
Equipment, Computer Hardware and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	462	160
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	124	111
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 31	$ 25