Operating Leases, as Lessee (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Future Non-cancellable Minimum Rental Payments Required Under Operating Leases and/or Licenses

The future non-cancellable minimum rental payments required under operating leases and/or licenses at December 31, 2017 are as follows (in thousands):

Year Ending December 31,
2018	$	15,031
2019		10,259
2020		9,894
2021		9,931
2022		9,675
Thereafter		65,126
Total	$	119,916