Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.7.0.1
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Leases Operating [Abstract]        
Non-cancelable operating lease expiration period     2021  
Rent expense $ 0.1 $ 0.1 $ 0.2 $ 0.1