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Borrowings (Principal Repayments) (Detail) (Restated [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Restated [Member]
 
Extinguishment of Debt [Line Items]  
2012 $ 78,504
2013 304,645
2014 0
2015 0
2016 and beyond 932,089
Total $ 1,315,238