Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Lease Payments Under Noncancelable Operating Leases

(in thousands)
2017	$	129,120
2018		132,015
2019		132,242
2020		57,083
2021		21,035
Thereafter		34,644
Total future minimum commitment payments	$	506,139