Leases (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Minimum Annual Payments Under Non-Cancelable Leases

Minimum annual payments under these non-cancelable leases as of December 31, 2017 were as follows (in thousands):

Year Ending December 31,
2018	$	10,626
2019		9,344
2020		7,223
2021		6,716
2022		4,843
Thereafter		14,046
Total minimum lease payments	$	52,798