Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Rent Expense

Rent expense under all operating leases was as follows (in thousands):

	Year Ended December 31,
	2017		2016		2015
Rent expense	$	6,095	$	6,561	$	5,033

Schedule of Future Minimum Rental Payments for Operating Leases

As of December 31, 2017, future minimum lease payments under non-cancellable leases, reduced for sublease income, were as follows (in thousands):

2018	$	5,016
2019	5,035
2020	4,983
2021	4,021
2022	2,703
Thereafter	4,353
	$	26,111