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Consolidated Condensed Statement of Stockholders' Equity and Comprehensive Income(Unaudited) (USD $)
In Thousands
CommonStockClassA[Member]
CommonStockClassB[Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
AccumluatedOtherComprehensiveIncome[Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2010$ 140$ 24$ 90,842$ (16,799)$ 476$ 26,015$ 100,698
Net loss     (12,022)(12,022)
Other comprehensive loss:       
Unrealized loss on effective portion of fuel hedge, net of tax of $54    (140) (140)
Comprehensive loss    (140)(12,022)(12,162)
Reclassification of fuel hedge gain into statement of operations, net of income tax of $617    (1,607) (1,607)
Issuance of restricted stock from treasury stock, net3 (2,999)2,589  (407)
Income tax benefit arising from restricted share vesting  432   432
Stock-based employee compensation expense  863   863
Balance at Sep. 30, 2011$ 143$ 24$ 89,138$ (14,210)$ (1,271)$ 13,993$ 87,817