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

6 Months Ended

Jun. 30, 2018

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Liabilities Measured at Fair Value on Recurring Basis

The following details our liabilities that are measured at fair value on a recurring basis at June 30, 2018 and December 31, 2017:

						Fair Value Measurements at June 30, 2018 Using
Description (1)		Total Fair Value at June 30, 2018				Quoted Prices in Active Markets for Identical Contracts (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)				Total Fair Value at December 31, 2017
		(In Thousands)
Liabilities - Current and noncurrent accrued and    other liabilities:
Embedded derivative		$	(1,838	)		$	—			$	—			$	(1,838	)		$	(2,660	)
Total		$	(1,838	)		$	—			$	—			$	(1,838	)		$	(2,660	)

(1) There were no assets that were measured at fair value on a recurring basis at June 30, 2018 or December 31, 2017.

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								Assets								Liabilities
		Three Months Ended								Three Months Ended								Six Months Ended								Six Months Ended
		June 30,								June 30,								June 30,								June 30,
		2018				2017				2018				2017				2018				2017				2018				2017
		(In Thousands)
Beginning balance		$	534			$	867			$	(2,395	)		$	(3,715	)		$	—			$	—			$	(2,660	)		$	(2,557	)
Transfers into Level 3			—				—				—				—				—				—				—				—
Transfers out of Level 3			—				—				—				—				—				—				—				—
Total realized and unrealized gains (losses)    included in operating results			—				—				358				(109	)			534				867				623				(1,267	)
Purchases			—				—				—				—				—				—				—				—
Issuances			—				—				(229	)			—				—				—				(229	)			—
Sales			(534	)			(867	)			—				—				(534	)			(867	)			—				—
Settlements			—				—				428				687				—				—				428				687
Ending balance		$	—			$	—			$	(1,838	)		$	(3,137	)		$	—			$	—			$	(1,838	)		$	(3,137	)
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		$	—			$	—			$	252			$	(289	)		$	—			$	—			$	1,051			$	(580	)

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

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

		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2018				2017				2018				2017
		(In Thousands)
Total net gains (losses) included in operating results:
Other income - Carbon credits		$	—			$	—			$	534			$	867
Other expense - Contractual obligations relating to    carbon credits			106				180				(428	)			(687	)
Non-operating other income (expense) - embedded    derivative			252				(289	)			1,051				(580	)
Total net gains (losses) included in operating results		$	358			$	(109	)		$	1,157			$	(400	)

X

- Definition

Tabular disclosure of the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs).

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Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
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- Definition

Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4E
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