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9) Other Business Activity (Details) (USD $)
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Details    
Mortgages originated and sold $ (1,180,674,000) $ (1,034,903,000)
AmountAvailableToOriginateLoansUnderWellsFargoAgreement 75,000,000  
AmountAvailableToOriginateLoansUnderUBS Agreement 40,000,000  
Interest accuring on a portion of the mortgage loans - range 2.5% to 2.75% over the 30-day LIBOR rate  
Mortgage loans in which settlements with third party investors were still pending $ 143,731,000