Loans Receivable And Allowance For Credit Losses (Troubled Debt Restructurings On Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014 contract	Mar. 31, 2013 contract	Mar. 31, 2014 contract	Mar. 31, 2013 contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	32	54	76	116
Pre-Restructured Outstanding	$ 4,262	$ 7,885	$ 8,350	$ 21,180
Post-Restructured Outstanding	4,235	7,920	8,352	21,327
One-To Four-Family Loans - Originated [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	31	45	69	100
Pre-Restructured Outstanding	4,247	6,826	8,072	19,404
Post-Restructured Outstanding	4,220	6,857	8,073	19,507
One-To Four-Family Loans - Purchased [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		5	2	7
Pre-Restructured Outstanding		983	198	1,538
Post-Restructured Outstanding		982	198	1,580
Multi-Family And Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts				2
Pre-Restructured Outstanding				82
Post-Restructured Outstanding				79
Consumer - Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	4	5	7
Pre-Restructured Outstanding	15	76	80	156
Post-Restructured Outstanding	$ 15	$ 81	$ 81	$ 161