Commitments and Contingencies Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Future minimum rental payments under operating leases with remaining lease terms in excess of one year at December 31, 2017 are as follows:

(In thousands)	Operating Leases
2018	$	158,347
2019	125,843
2020	94,362
2021	57,630
2022	26,328
Thereafter	3,729
Total future minimum rental payments	$	466,239