Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Consolidated Balance Sheets
Allowances on accounts receivable	$ 971	$ 527
Convertible preferred stock, par value (in dollars per share)		$ 0.0001
Convertible preferred stock, shares authorized		51,233,000
Convertible preferred stock, shares issued		31,397,000
Convertible preferred stock, shares outstanding		31,397,000
Convertible preferred stock, liquidation preference (in dollars)		$ 133,757
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	750,000,000	82,000,000
Common stock, shares issued	50,346,000	6,879,000
Common stock, shares outstanding	50,346,000	6,879,000