Annual report pursuant to Section 13 and 15(d)

Balances and Changes in Uncertain Tax Positions (Detail)

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Balances and Changes in Uncertain Tax Positions (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Income Tax Uncertainties [Line Items]    
Balance at beginning of period      
Increases related to carryback positions 9,482   
Balance at end of period $ 9,482