Loans Receivable And Allowance For Credit Losses (Allowance For Credit Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 8,919	$ 10,477	$ 8,822	$ 11,100
Charge-offs	(121)	(457)	(546)	(1,323)
Recoveries	9	52	16	62
Provision for credit losses	160		675	233
Ending Balance	8,967	10,072	8,967	10,072
One-To Four-Family Loans - Originated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	5,839	5,639	5,771	6,074
Charge-offs	(52)	(284)	(140)	(503)
Recoveries			1
Provision for credit losses	950	647	1,105	431
Ending Balance	6,737	6,002	6,737	6,002
One-To Four-Family Loans - Purchased [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,513	4,290	2,486	4,453
Charge-offs	(60)	(153)	(387)	(685)
Recoveries		42		42
Provision for credit losses	(636)	(684)	(282)	(315)
Ending Balance	1,817	3,495	1,817	3,495
One-To Four-Family Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	8,352	9,929	8,257	10,527
Charge-offs	(112)	(437)	(527)	(1,188)
Recoveries		42	1	42
Provision for credit losses	314	(37)	823	116
Ending Balance	8,554	9,497	8,554	9,497
Multi-Family And Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	182	201	185	219
Provision for credit losses	(39)	7	(42)	(11)
Ending Balance	143	208	143	208
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	385	347	380	354
Charge-offs	(9)	(20)	(19)	(135)
Recoveries	9	10	15	20
Provision for credit losses	(115)	30	(106)	128
Ending Balance	$ 270	$ 367	$ 270	$ 367