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Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Taxes [Line Items]      
Increase in valuation allowance related to changes in the estimated tax benefit of federal and state operating losses of separate-return entities $ 1,275    
Total unrecognized tax benefits that would affect effective tax rate, if recognized 33,758    
Decrease in beginning balance due to addition of liabilities for current year (7,008)    
Liability for unrecognized tax benefits 60,538 67,546 8,943
Accrued interest and penalties related to unrecognized tax benefits, net of federal tax benefits 10,742 12,073  
Unrecognized tax benefits that may be recognized within the next 12 months 26,779    
Federal
      
Income Taxes [Line Items]      
Net operating loss carryforwards 231,711    
Net operating loss carryforwards, expiration beginning year 2028    
Federal | Maximum
      
Income Taxes [Line Items]      
Net operating loss carryforwards, expiration year 2033    
State
      
Income Taxes [Line Items]      
Net operating loss carryforwards 263,461    
State | Maximum
      
Income Taxes [Line Items]      
Net operating loss carryforwards, expiration year 2033    
International
      
Income Taxes [Line Items]      
Net operating loss carryforwards $ 17,751