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Percentage of estimated annual fuel requirements hedged for the remainder of the period.

+ References

No definition available.

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- Definition

Fair value of all asset derivatives designated as cash flow hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 30

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-Paragraph 1

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The number of derivative instruments of a particular group held by the entity.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

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- Definition

Fuel costs incurred that are directly related to goods produced and sold and services rendered during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-03.2(a),(d))

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The net gain (loss) relating to components of the gain (loss) on the cash flow hedging instrument excluded from the assessment of cash flow hedge effectiveness. Recognized in earnings.

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The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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Note 6 - Derivative Instruments (Details) (USD $)	3 Months Ended		9 Months Ended				9 Months Ended		3 Months Ended
Note 6 - Derivative Instruments (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Gallons of Diesel [Member] Fuel Requirements 2014 [Member]	Jun. 30, 2014 Gallons of Diesel [Member] Fuel Requirements 2014 [Member]	Sep. 30, 2014 Fuel Requirements 2015 [Member] Gallons of Diesel [Member]	Sep. 30, 2014 Fuel Requirements 2016 [Member] Gallons of Diesel [Member]	Sep. 30, 2014 Hedge Contracts Ineffectiveness [Member]
Note 6 - Derivative Instruments (Details) [Line Items]
Fuel Costs	$ 42,784,000	$ 46,540,000	$ 127,875,000	$ 141,734,000					$ 400,000
Derivative, Number of Instruments Held						3,400,000	12,600,000	9,100,000
Percent of Projected Fuel Requirements					24.30%		22.80%	16.40%
Cash Flow Hedge Derivative Instrument Assets at Fair Value	4,300,000		4,300,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	800,000		200,000
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net			100,000
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net			100,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 1,600,000