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Income Taxes (Details 3) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income tax expense reconciliation to federal statutory rate      
Federal statutory tax rate (as a percent) 35.00% 35.00% 35.00%
Expected tax (benefit) expense $ (73,957) $ 18,465 $ 26,148
State and foreign income taxes, net of federal (expense) benefit (1,312) 2,955 1,637
Non-deductible compensation 3,969 2,830 1,977
Non-deductible business combination transaction costs 202 1,998  
Non-deductible goodwill impairment charges 67,418    
Dividend 4,484    
Tax credits (3,025)    
Change in valuation allowance 27,230   (876)
Change in uncertain tax positions 3,582    
Other (1,142) (28) 521
Provision for income taxes $ 27,449 $ 26,220 $ 29,407