Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum lease payments under a non-cancelable facility operating lease

As of December 31, 2017, future minimum lease payments under the non-cancelable facility operating lease and non-cancelable purchase commitments were as follows (in thousands):

	December 31, 2017
2018	$	3,782
2019	2,019
2020	591
2021	—
2022	—
Thereafter	—
Total	$	6,392