Leased Properties (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Future Minimum Payments of Leases

Future minimum payments, by year and in the aggregate, under the noncancelable operating leases with initial or remaining terms of one year or more was approximately the following at December 31, 2017 (in thousands):

2018	$	299,200
2019	234,500
2020	172,400
2021	114,700
2022	81,600
Thereafter	237,600
Total minimum lease payments	$	1,140,000