Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Schedule of Future Minimum Cash Commitments Under Operating Leases

We lease certain of our office facilities and equipment under various operating leases. Future minimum cash commitments under operating leases as of December 31, 2018 were as follows (in thousands):

Year Ending December 31,	Gross Operating Lease Commitments		Sub-Leases		Net Operating Lease Commitments
2019	$	34,490	$	234	$	34,256
2020		30,653		234		30,419
2021		26,172		—		26,172
2022		20,358		—		20,358
2023		18,981		—		18,981
Thereafter		65,854		—		65,854
Total	$	196,508	$	468	$	196,040