CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Net of allowance	$ 382	$ 321
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	250,000,000	250,000,000
Common stock, issued	44,480,232	20,980,961
Common stock, outstanding	44,480,232	20,980,961
Series A convertible preferred stock
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, authorized	10,000,000	10,000,000
Preferred stock, issued	650,000	650,000
Preferred liquidation preference	$ 65,000	$ 65,000
Series B convertible preferred stock
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	75,000	75,000
Preferred stock, issued	0	64,500
Preferred stock, outstanding	0	64,500