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Loans Held for Sale - Components of Held for Sale (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Receivables [Abstract]        
Loans held for sale - fair value $ 503,753 $ 426,480 $ 0  
Loans held for sale - lower of cost or fair value 62,907 82,866 20,633 25,803
Loans held for sale $ 566,660 $ 509,346