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Note 11 - Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2014
Disclosure Text Block [Abstract] |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
Details about AOCI Components |  | Amount Reclassified from AOCI for the three months ended March 31, 2014 |  | Affected Line Item in the Statement of Operations
Gains/(losses) on cash flow hedges |  |  |  |  |
Commodity derivative contracts |  | $ | 273 |  | Fuel expense
|  |  | (105) |  | Income tax expense
|  | $ | 168 |  | Net of tax

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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