Organization, Basis of Presentation and Recent Accounting Pronouncements (Tables)

3 Months Ended

Mar. 31, 2017

New Accounting Pronouncement, Early Adoption [Line Items]

New Accounting Pronouncement, Early Adoption

The prior period has been adjusted to reflect this adoption, as detailed below:

	Three Months Ended March 31, 2016
	As
	Previously					As
(in thousands)	Reported			Adjustment		Adopted
Cash Flows from Operating Activities
Decrease in Restricted Cash	$	(13,888	)	$	13,888	$	—
Net Cash Provided by Operating Activities	46,994			13,888		60,882
Net Decrease in Cash and Cash Equivalents and Restricted Cash	(223,620		)	13,888		(209,732		)
Cash and Cash Equivalents and Restricted Cash at Beginning of Year	754,207			20,745		774,952
Cash and Cash Equivalents and Restricted Cash at End of Year	530,587			34,633		565,220

Schedule of Prospective Adoption of New Accounting Pronouncements

The Company will adopt the new standard in the first quarter of 2018, and expects the following changes to its financial statements upon adoption, as detailed below:

	Income from Operations			Non-operating pension and postretirement benefit income		Income Before Income Taxes
(in thousands)
Three Months Ended March 31, 2017
As Reported	$	29,054		$	—	$	23,786
Adjustment	(18,801		)	18,801		—
Upon Adoption	10,253			18,801		23,786
Three Months Ended March 31, 2016
As Reported	$	51,872		$	—	$	60,615
Adjustment	(15,677		)	15,677		—
Upon Adoption	36,195			15,677		60,615
Twelve Months Ended December 31, 2016
As Reported	$	303,534		$	—	$	250,658
Adjustment	(80,665		)	80,665		—
Upon Adoption	222,869			80,665		250,658