9) Other Business Activity (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011
Mortgages originated and sold		$ (1,737,214,000)	$ (959,730,000)
AmountAvailableToOriginateLoansUnderWellsFargoAgreement	75,000,000	75,000,000
AmountAvailableToOriginateLoansUnderUBS Agreement	40,000,000	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	$ 197,200,000	$ 197,200,000