Commitment and Contingencies Disclosure (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Operating leases

The amounts of annual minimum lease payments due under these leases as of December 31, 2017, were:

	2018		2019		2020		2021		2022		Thereafter
	(In thousands)
Operating leases	$	55,511	$	45,307	$	33,168	$	18,562	$	7,047	$	40,833

Purchase commitments

The commitments under these contracts as of December 31, 2017, were:

	2018		2019		2020		2021		2022		Thereafter
	(In thousands)
Purchase commitments	$	360,751	$	215,005	$	162,424	$	135,334	$	99,068	$	773,820