Condensed Statements of Changes in Convertible Preferred Stock and Stockholders' Deficit - Temporary Equity - 3 months ended Mar. 31, 2016 $ in Thousands	Series A Convertible Preferred Stock. USD ($) shares
Temporary equity, balance at beginning of period (shares) at Dec. 31, 2015 | shares	745,637
Temporary equity, balance at beginning of period at Dec. 31, 2015	$ 7,953
Increase (Decrease) in Temporary Equity
Redemption value adjustment - Series A preferred stock	$ 149
Temporary equity, balance at end of period (shares) at Mar. 31, 2016 | shares	745,637
Temporary equity, balance at end of period at Mar. 31, 2016	$ 8,102