CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Consolidated Balance Sheets
Convertible preferred stock, par value (in dollars per share)		$ 0.00001
Convertible preferred stock, shares authorized		34,090,000
Convertible preferred stock, shares issued		27,341,057
Convertible preferred stock, shares outstanding		27,341,057
Liquidation Preference		$ 35,882
Preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	10,000,000	0
Preferred stock, shares issued	0
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized	100,000,000	77,000,000
Common stock, shares issued	20,157,503	2,730,427
Common stock, shares outstanding	20,157,503	2,730,427