Fair Value Measurements Assumptions And Level 3 Rollforward (Details) - Warrant Liability
$ in Thousands
9 Months Ended
Sep. 30, 2016
USD ($)
Roll-forward of the fair value of liabilities measured at fair value on a recurring basis  
Balance, beginning of period $ 289
Changes in fair value recognized in other expense 87
Reclassification to additional paid-in capital in connection with IPO $ (376)