Property and Equipment, net (Tables)

12 Months Ended

Dec. 31, 2017

Property and Equipment, net [Abstract]

Summary of Property and Equipment, Net

	December 31, 2017			December 31, 2016
Lasers placed-in-service	$	17,820		$	16,712
Equipment, computer hardware and software		462			160
Furniture and fixtures		124			111
Leasehold improvements		31			25
		18,437			17,008
Accumulated depreciation and amortization		(10,734	)		(6,828	)
Property and equipment, net	$	7,703		$	10,180