Rollforward of amounts included in accumulated other comprehensive loss related to fair value of financial derivative instruments qualify for hedge accounting.

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- Definition

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 26

+ Details

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- Definition

Net of tax effect of the reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 18, 19

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph c(3)

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 24

-Subparagraph b

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 31, 46

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- Definition

Change in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 17, 20

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 121

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph c(3)

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 24

-Subparagraph b

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 46

+ Details

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Comprehensive Income (Loss) (Details1) (USD $) In Thousands	3 Months Ended		9 Months Ended
Comprehensive Income (Loss) (Details1) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Rollforward of amounts included in accumulated other comprehensive loss related to fair value of financial derivative instruments qualify for hedge accounting
Beginning Balance			$ (8,005)
2011 changes in fair value, net of deferred taxes			7,784
Reclassification to earnings			0
Ending Balance	(221)		(221)
Interest rate swaps [Member]
Rollforward of amounts included in accumulated other comprehensive loss related to fair value of financial derivative instruments qualify for hedge accounting
Beginning Balance			(7,860)
2011 changes in fair value, net of deferred taxes	980	2,007	7,860	5,577
Reclassification to earnings			0
Ending Balance	0		0
Natural Gas Swaps [Member]
Rollforward of amounts included in accumulated other comprehensive loss related to fair value of financial derivative instruments qualify for hedge accounting
Beginning Balance			(145)
2011 changes in fair value, net of deferred taxes	(80)	(292)	(76)	(296)
Reclassification to earnings			0
Ending Balance	$ (221)		$ (221)