Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Future minimum lease payments

As of December 31, 2017, future minimum lease payments are as follows (in thousands):

2018	$	1,486
2019	1,525
2020	1,203
2021	1,200
2022	—
Total future minimum lease payments	$	5,414