Leases (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum lease payments, including termination fees, under noncancellable operating leases for office space in effect at December 31, 2017 are as follows:

(in thousands)
2018	$	14,139
2019	11,570
2020	8,785
2021	7,675
2022	7,046
Thereafter	15,898
Total	$	65,113