Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments

Future minimum payments by year under non-cancelable leases with initial terms in excess of one year were as follows as of December 31, 2017:

2018	$	3,450
2019	3,567
2020	3,735
2021	3,692
2022	3,800
2023 and thereafter	18,021
Total	$	36,265