Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred Tax Assets and Liabilities (Detail)

v2.4.0.6
Income Taxes - Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Deferred income tax liabilities -      
Property and equipment $ (205,977) $ (204,918)  
Goodwill (48,201) (43,057)  
Other intangibles (46,661) (54,206)  
Book/tax accounting method difference (45,159) (27,924)  
Total deferred income tax liabilities (345,998) (330,105)  
Deferred income tax assets -      
Accruals and reserves 33,357 40,619  
Accrued insurance 53,163 55,169  
Deferred revenue 16,259 14,243  
Net operating loss carryforwards 17,115 15,615  
Other 20,540 13,140  
Subtotal 140,434 138,786  
Valuation allowance (9,344) (8,783) (11,400)
Total deferred income tax assets 131,090 130,003  
Total net deferred income tax liabilities $ (214,908) $ (200,102)