Derivatives, Hedges, Financial Instruments and Carbon Credits (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following details our assets and liabilities that are measured at fair value on a recurring basis at March 31, 2017 and December 31, 2016:

				Fair Value Measurements at March 31, 2017 Using
Description	Total Fair Value at March 31, 2017			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value at December 31, 2016
	(In Thousands)
Assets - Supplies, prepaid items and other:
Carbon credits	$	867		$	—	$	—	$	867		$	—
Total	$	867		$	—	$	—	$	867		$	—
Liabilities - Current and noncurrent accrued and    other liabilities:
Contractual obligations - carbon credits	$	(867	)	$	—	$	—	$	(867	)	$	—
Embedded derivative		(2,848	)		—		—		(2,848	)		(2,557	)
Foreign exchange contracts		—			—		—		—			(1	)
Total	$	(3,715	)	$	—	$	—	$	(3,715	)	$	(2,558	)

Reconciliation of Beginning and Ending Balances for Assets and Liabilities Measured at Fair Value on Recurring Basis

the following is a reconciliation of the beginning and ending balances for assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3):

	Assets				Liabilities
	Three Months Ended				Three Months Ended
	March 31,				March 31,
	2017		2016		2017			2016
	(In Thousands)
Beginning balance	$	—	$	1,154	$	(2,557	)	$	(1,154	)
Transfers into Level 3		—		—		—			—
Transfers out of Level 3		—		—		—			—
Total realized and unrealized gains (losses)    included in operating results		867		60		(1,158	)		(60	)
Purchases		—		—		—			—
Issuances		—		—		—			—
Sales		—		—		—			—
Settlements		—		—		—			—
Ending balance	$	867	$	1,214	$	(3,715	)	$	(1,214	)
Total gains (losses) for the period included in operating    results attributed to the change in unrealized gains or    losses on assets and liabilities still held at the reporting    date	$	867	$	60	$	(1,158	)	$	(60	)

Net Gains (Losses) Included in Continuing Operating Results and Statement of Operations Classifications

Net gains (losses) included in continuing operating results and the statement of operations classifications are as follows:

	Three Months Ended
	March 31,
	2017			2016
	(In Thousands)
Total net gains (losses) included in operating results:
Cost of sales - Undesignated commodities contracts	$	—		$	(17	)
Cost of sales - Undesignated foreign exchange contracts		—			13
Other income - Carbon credits		867			60
Other expense - Contractual obligations relating to carbon    credits		(867	)		(60	)
Non-operating other expense - embedded derivative		(291	)		(2,509	)
Total net losses included in operating results	$	(291	)	$	(2,513	)

Schedule of Carrying Values and Estimated Fair Values of Financial Instruments

At March 31, 2017 and December 31, 2016, we did not have any financial instruments with fair values significantly different from their carrying amounts (which excludes issuance costs, if applicable), except for the Senior Secured Notes as shown below.

	March 31, 2017				December 31, 2016
	Carrying		Estimated		Carrying		Estimated
	Amount		Fair Value		Amount		Fair Value
	(In Millions)
Senior Secured Notes (1)	$	375	$	366	$	375	$	356

(1) Based on a quoted price of 97.5 at March 31, 2017 and 94.88 at December 31, 2016.