Fair Value Of Financial Instruments (Schedule Of Fair Value Assets Measured On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended					3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2013 Significant Other Observable Inputs (Level 2) [Member]	Sep. 30, 2013 Significant Other Observable Inputs (Level 2) [Member]	Dec. 31, 2013 Significant Unobservable Inputs (Level 3) [Member]		Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member]		Dec. 31, 2013 GSE Debentures [Member]	Sep. 30, 2013 GSE Debentures [Member]	Dec. 31, 2013 GSE Debentures [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 30, 2013 GSE Debentures [Member] Significant Other Observable Inputs (Level 2) [Member]	Dec. 31, 2013 MBS [Member]	Sep. 30, 2013 MBS [Member]	Dec. 31, 2013 MBS [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 30, 2013 MBS [Member] Significant Other Observable Inputs (Level 2) [Member]	Dec. 31, 2013 Municipal Bonds [Member]	Sep. 30, 2013 Municipal Bonds [Member]	Dec. 31, 2013 Municipal Bonds [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 30, 2013 Municipal Bonds [Member] Significant Other Observable Inputs (Level 2) [Member]	Dec. 31, 2013 Trust Preferred Securities [Member]	Sep. 30, 2013 Trust Preferred Securities [Member]	Dec. 31, 2013 Trust Preferred Securities [Member] Significant Unobservable Inputs (Level 3) [Member]		Sep. 30, 2013 Trust Preferred Securities [Member] Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale ("AFS") securities, carrying value	$ 993,593		$ 1,069,967	$ 991,184	$ 1,067,544	$ 2,409	[1]	$ 2,423	[2]	$ 648,162	$ 702,228	$ 648,162	$ 702,228	$ 341,866	$ 363,964	$ 341,866	$ 363,964	$ 1,156	$ 1,352	$ 1,156	$ 1,352	$ 2,409	$ 2,423	$ 2,409	[1]	$ 2,423	[2]
Proceeds from principal repayments	96,656	345,298				25		424
Reductions in net unrealized losses included in OCI						$ 1		$ 276

[1] The Company’s Level 3 AFS securities had no activity during the three months ended December 31, 2013, except for principal repayments of $25 thousand and reductions in net unrealized losses recognized in other comprehensive income. Reductions in net unrealized losses included in other comprehensive income for the three months ended December 31, 2013 were $1 thousand.

[2] The Company’s Level 3 AFS securities had no activity during fiscal year 2013, except for principal repayments of $424 thousand and reductions in net unrealized losses recognized in other comprehensive income. Reductions in net unrealized losses included in other comprehensive income for the year ended September 30, 2013 were $276 thousand.