Commitments and Contingencies (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) ft² claim defendant
Commitments and Contingencies Disclosure [Abstract]
Lease agreement square footage | ft²	18,500
Future minimum lease payments under non-cancelable facility operating leases
2017 (remaining)	$ 307
2018	634
2019	653
2020	224
2021	0
Thereafter	0
Total	$ 1,818
Number of claims | claim	0
Namzaric XR
Loss Contingencies [Line Items]
Number of defendants not entered Into settlement agreements | defendant	1