v3.8.0.1

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 1 - Fair Values of Derivative Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value
Asset Derivatives	$ 8,633	$ 742
Liability Derivatives	(1,457)	(11,608)
Designated as Hedging Instruments
Derivatives, Fair Value
Asset Derivatives	7,874	0
Liability Derivatives	(454)	(10,100)
Designated as Hedging Instruments | Commodity contracts | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	20	0
Liability Derivatives	(33)	(112)
Designated as Hedging Instruments | Interest rate swaps | Other current assets
Derivatives, Fair Value
Asset Derivatives	5,547	0
Liability Derivatives	0	0
Designated as Hedging Instruments | Interest rate swaps | Other long-term assets, net
Derivatives, Fair Value
Asset Derivatives	2,307	0
Liability Derivatives	0	0
Designated as Hedging Instruments | Interest rate swaps | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	0	0
Liability Derivatives	(114)	(5,394)
Designated as Hedging Instruments | Interest rate swaps | Other long-term liabilities
Derivatives, Fair Value
Asset Derivatives	0	0
Liability Derivatives	(307)	(4,594)
Not Designated as Hedging Instruments | Commodity contracts | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	759	742
Liability Derivatives	$ (1,003)	$ (1,508)

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+ References

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-SubTopic 20
-Section 50
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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