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Income Taxes (Components Of Deferred Tax Liabilities And Assets) (Details) (USD $)
In Thousands
Jul. 31, 2011
Jul. 31, 2010
Income Taxes    
Fixed assets $ 131,024 $ 109,921
Intangible assets 34,350 31,825
Real estate and other investments 5,326  
Total 170,700 141,746
Deferred membership revenue 22,668 26,282
Real estate and other investments 2,124 5,041
Deferred compensation and other accrued liabilities 10,093 10,902
Stock-based compensation 13,436 10,366
Unfavorable lease obligation, net 15,754  
Net operating loss carryforwards other tax credits 2,187 2,041
Other, net 1,985 1,612
Total 68,247 56,244
Valuation allowance for deferred income taxes (1,588) (1,588)
Deferred income tax assets, net of valuation allowance 66,659 54,656
Net deferred income tax liability $ 104,041 $ 87,090