Loans Receivable (excluding Covered Loans) (Schedule of Changes in the Accretable Yield for Acquired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretion, Carrying Amount of Loans	$ 215	$ 1,086
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	37,236	16,928
Balance at beginning of period, Carrying Amount of Loans	69,718	77,613
Reclassification from nonaccretable balance, net, AccretableYield		30,026
Reclassification from nonaccretable balance, net, Carrying Value of Loans		0
Additions, AccretableYield		0
Additions, Carrying Amount of Loans		9,865
Accretion, AccretableYield	(2,715)	(9,718)
Accretion, Carrying Amount of Loans	2,715	9,718
Transfers to REO, AccretableYield	0	0
Transfers to REO, Carrying Amount of Loans	(346)	(3,975)
Payments received, net, AccretableYield	0	0
Payments received, net, Carrying Amount of Loans	(6,495)	(23,503)
Balance at end of period, AccretableYield	34,521	37,236
Balance at end of period, Carrying Amount of Loans	65,592	69,718
Acquired Non-Impaired 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	4,977	0
Balance at beginning of period, Carrying Amount of Loans	245,373	0
Reclassification from nonaccretable balance, net, AccretableYield		0
Reclassification from nonaccretable balance, net, Carrying Value of Loans		0
Additions, AccretableYield		10,804
Additions, Carrying Amount of Loans		351,335
Accretion, AccretableYield	(319)	(5,827)
Accretion, Carrying Amount of Loans	319	5,827
Transfers to REO, AccretableYield	0	0
Transfers to REO, Carrying Amount of Loans	(1,124)	(7,755)
Payments received, net, AccretableYield	0	0
Payments received, net, Carrying Amount of Loans	(20,453)	(104,034)
Balance at end of period, AccretableYield	4,658	4,977
Balance at end of period, Carrying Amount of Loans	$ 224,115	$ 245,373