Loans Receivable And Allowance For Credit Losses (Impaired Loans By Class, Instant Related Disclosures) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	$ 26,894	$ 27,411
Recorded Investment, Allowance Recorded	25,959	38,130
Recorded Investment	52,853	65,541
Unpaid Principal Balance, No Related Allowance	30,317	31,175
Unpaid Principal Balance, Allowance Recorded	26,022	38,211
Unpaid Principal Balance	56,339	69,386
Related ACL	202	319
With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	202	319
One-To Four-Family Loans - Originated [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	13,871	12,950
Recorded Investment, Allowance Recorded	23,675	35,520
Recorded Investment	37,546	48,470
Unpaid Principal Balance, No Related Allowance	14,507	13,543
Unpaid Principal Balance, Allowance Recorded	23,767	35,619
Unpaid Principal Balance	38,274	49,162
Related ACL	107	209
One-To Four-Family Loans - Originated [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
One-To Four-Family Loans - Originated [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	107	209
One-To Four-Family Loans - Purchased [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	12,405	13,882
Recorded Investment, Allowance Recorded	1,820	2,034
Recorded Investment	14,225	15,916
Unpaid Principal Balance, No Related Allowance	14,896	16,645
Unpaid Principal Balance, Allowance Recorded	1,791	2,015
Unpaid Principal Balance	16,687	18,660
Related ACL	56	29
One-To Four-Family Loans - Purchased [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
One-To Four-Family Loans - Purchased [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	56	29
Multi-Family And Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	0	0
Recorded Investment, Allowance Recorded	0	73
Recorded Investment	0	73
Unpaid Principal Balance, No Related Allowance	0	0
Unpaid Principal Balance, Allowance Recorded	0	74
Unpaid Principal Balance	0	74
Related ACL	0	2
Multi-Family And Commercial Loans [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
Multi-Family And Commercial Loans [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	2
Consumer - Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	605	577
Recorded Investment, Allowance Recorded	464	492
Recorded Investment	1,069	1,069
Unpaid Principal Balance, No Related Allowance	892	980
Unpaid Principal Balance, Allowance Recorded	464	492
Unpaid Principal Balance	1,356	1,472
Related ACL	39	78
Consumer - Home Equity [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
Consumer - Home Equity [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	39	78
Consumer - Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, No Related Allowance	13	2
Recorded Investment, Allowance Recorded	0	11
Recorded Investment	13	13
Unpaid Principal Balance, No Related Allowance	22	7
Unpaid Principal Balance, Allowance Recorded	0	11
Unpaid Principal Balance	22	18
Related ACL	0	1
Consumer - Other [Member] | With no related allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	0	0
Consumer - Other [Member] | With an allowance recorded [Member]
Financing Receivable, Impaired [Line Items]
Related ACL	$ 0	$ 1