Loans Receivable (excluding Covered Loans) (Schedule of Changes in the Accretable Yield for Credit Impaired Acquired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretion, Carrying Amount of Loans	$ 270	$ 1,619
Credit Impaired Acquired Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period, AccretableYield	16,928
Balance at beginning of period, Carrying Amount of Loans	77,613
Additions, AccretableYield	0
Additions, Carrying Amount of Loans	0
Accretion, AccretableYield	(1,360)
Accretion, Carrying Amount of Loans	1,360
Transfers to REO, AccretableYield	0
Transfers to REO, Carrying Amount of Loans	(957)
Payments received, net, AccretableYield	0
Payments received, net, Carrying Amount of Loans	(8,677)
Balance at end of period, AccretableYield	15,568
Balance at end of period, Carrying Amount of Loans	$ 69,339