Annual report pursuant to Section 13 and 15(d)

Operating Leases (Details)

v3.8.0.1
Operating Leases (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Gross minimum future rentals  
2018 $ 372,420
2019 329,760
2020 260,238
2021 207,727
2022 175,123
Thereafter 484,444
Total $ 1,829,712