Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments under Operating Leases

The future minimum annual cash payments under these operating lease agreements as of December 31, 2016 was as follows (in thousands):  

Year ended December 31,
2017	$	49,250
2018	41,074
2019	33,640
2020	25,452
2021	22,898
Thereafter	142,930
Total minimum lease payments	$	315,244