Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

As of December 31, 2017, future minimum lease payments under all operating leases were as follows (in thousands):

2018	$	950
2019	483
2020	$	16
2021	$	12
Total payments	$	1,461