Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v2.4.0.8
Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Internal Revenue Service (IRS)
Dec. 31, 2011
Internal Revenue Service (IRS)
Dec. 31, 2010
Internal Revenue Service (IRS)
Dec. 31, 2013
Tax loss carrybacks to 2010 and 2011
Dec. 31, 2012
Tax loss carrybacks to 2010 and 2011
Dec. 31, 2011
Tax loss carrybacks to 2010 and 2011
Income Tax Expense (Benefit), Continuing Operations [Abstract]                  
Cash paid for income taxes $ 3,000,000 $ 16,056,000 $ 35,655,000            
Unrecognized tax benefits 9,482,000             9,500,000    
Proceeds from income tax refunds 59,126,000 479,000 379,000       59,100,000 500,000 400,000
Income tax 3,120,000 47,884,000              
Income tax receivable component from operating loss carryback         13,800,000 29,100,000      
Income tax receivable component from refund of estimated tax payments       $ 5,000,000