Loans Receivable And Allowance For Credit Losses (Impaired Loans By Class, Instant Related Disclosures) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Sep. 30, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	$ 28,409	$ 27,411
Recorded Investment, Allowance Recorded	26,877	38,130
Recorded Investment	55,286	65,541
Unpaid Principal Balance, No Related Allowance	32,223	31,175
Unpaid Principal Balance, Allowance Recorded	26,939	38,211
Unpaid Principal Balance	59,162	69,386
Related ACL	177	319
One-To Four-Family Loans - Originated [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	14,310	12,950
Recorded Investment, Allowance Recorded	24,888	35,520
Recorded Investment	39,198	48,470
Unpaid Principal Balance, No Related Allowance	14,965	13,543
Unpaid Principal Balance, Allowance Recorded	24,975	35,619
Unpaid Principal Balance	39,940	49,162
Related ACL	111	209
One-To Four-Family Loans - Purchased [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	13,454	13,882
Recorded Investment, Allowance Recorded	1,475	2,034
Recorded Investment	14,929	15,916
Unpaid Principal Balance, No Related Allowance	16,317	16,645
Unpaid Principal Balance, Allowance Recorded	1,450	2,015
Unpaid Principal Balance	17,767	18,660
Related ACL	29	29
Multi-Family And Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, Allowance Recorded		73
Recorded Investment		73
Unpaid Principal Balance, Allowance Recorded		74
Unpaid Principal Balance		74
Related ACL		2
Consumer - Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	625	577
Recorded Investment, Allowance Recorded	510	492
Recorded Investment	1,135	1,069
Unpaid Principal Balance, No Related Allowance	914	980
Unpaid Principal Balance, Allowance Recorded	510	492
Unpaid Principal Balance	1,424	1,472
Related ACL	37	78
Consumer - Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	20	2
Recorded Investment, Allowance Recorded	4	11
Recorded Investment	24	13
Unpaid Principal Balance, No Related Allowance	27	7
Unpaid Principal Balance, Allowance Recorded	4	11
Unpaid Principal Balance	31	18
Related ACL		$ 1