Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Effects of Prior Period Errors in Condensed Consolidated Balance Sheets (Detail)

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Significant Accounting Policies - Effects of Prior Period Errors in Condensed Consolidated Balance Sheets (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Prepaid expenses and other current assets $ 160,444 $ 145,624
Total current assets 1,503,965 984,047
Total assets 2,254,003 1,724,143
Income taxes payable 48,751 61,325
Total current liabilities 792,254 762,362
Total liabilities 1,820,384 1,328,660
Retained earnings 172,057 123,096
Total shareholders' equity 433,619 395,483
Total liabilities and shareholders' equity 2,254,003 1,724,143
As Previously Reported [Member]
    
Prepaid expenses and other current assets   125,425
Total current assets   963,848
Total assets   1,703,944
Income taxes payable   15,854
Total current liabilities   716,891
Total liabilities   1,283,189
Retained earnings   148,368
Total shareholders' equity   420,755
Total liabilities and shareholders' equity   $ 1,703,944