CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Preferred members liquidation preference	$ 0	$ 32,690
Common stock, par value (in dollars per share)	$ 0.10
Common stock, shares authorized	100,000,000	0
Common stock, shares issued	13,239,125	0
Common stock, shares outstanding	13,239,000	0
Convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.10
Convertible preferred stock, shares authorized	50,000	0
Convertible preferred stock, shares issued	50,000	0
Convertible preferred stock, shares outstanding	50,000	0