Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

The Company leases many of its office facilities for various terms under long-term, noncancelable operating lease agreements. The leases expire at various dates from fiscal year 2018 through fiscal year 2026. Future minimum lease payments are presented below (in thousands): 

	Operating Leases
2018	$	6,942
2019	5,298
2020	4,334
2021	2,861
2022	1,699
Thereafter	2,080
Total minimum lease payments	$	23,214