Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Commitments Under Non-cancelable Operating Leases and Scheduled Sublease Payments

Future minimum lease commitments on non-cancelable operating leases and scheduled sublease payments as of December 31, 2017 are as follows:

Years ended December 31,	Gross Payments		Scheduled Sublease Payments		Net Payments
2018	$	7,438	$	4,016	$	3,422
2019		3,753		2,195		1,558
Total future minimum lease payments	$	11,191	$	6,211	$	4,980