Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum lease payments

Future minimum lease payments under non-cancelable operating leases at December 31, 2017 are as follows (in thousands):

	Operating Leases
2018	$	8,246
2019	826
2020	84
2021	73
2022	—
Total minimum lease payments	$	9,229