Fair Value Of Financial Instruments (Tables)

6 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Schedule Of Fair Value Assets Measured On A Recurring Basis

	March 31, 2016
			Quoted Prices		Significant		Significant
			in Active Markets		Other Observable		Unobservable
	Carrying		for Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
	(Dollars in thousands)
AFS Securities:
GSE debentures	$	472,451	$	—	$	472,451	$	—
MBS	203,033		—		203,033		—
Municipal bonds	142		—		142		—
Trust preferred securities	1,790		—		—		1,790
	$	677,416	$	—	$	675,626	$	1,790

	September 30, 2015
			Quoted Prices		Significant		Significant
			in Active Markets		Other Observable		Unobservable
	Carrying		for Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
	(Dollars in thousands)
AFS Securities:
GSE debentures	$	526,620	$	—	$	526,620	$	—
MBS	229,491		—		229,491		—
Municipal bonds	144		—		144		—
Trust preferred securities	1,916		—		—		1,916
	$	758,171	$	—	$	756,255	$	1,916

Schedule Of Fair Value Assets Measured On A Non-recurring Basis

	March 31, 2016
			Quoted Prices		Significant		Significant
			in Active Markets		Other Observable		Unobservable
	Carrying		for Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
	(Dollars in thousands)
Loans individually evaluated for impairment	$	24,156	$	—	$	—	$	24,156
OREO	5,844		—		—		5,844
	$	30,000	$	—	$	—	$	30,000

	September 30, 2015
			Quoted Prices		Significant		Significant
			in Active Markets		Other Observable		Unobservable
	Carrying		for Identical Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
	(Dollars in thousands)
Loans individually evaluated for impairment	$	22,762	$	—	$	—	$	22,762
OREO	4,333		—		—		4,333
	$	27,095	$	—	$	—	$	27,095

Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments

	March 31, 2016				September 30, 2015
			Estimated				Estimated
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
	(Dollars in thousands)
Assets:
Cash and cash equivalents	$	203,811	$	203,811	$	772,632	$	772,632
AFS securities	677,416		677,416		758,171		758,171
HTM securities	1,270,849		1,293,441		1,271,122		1,295,274
Loans receivable	6,769,194		7,057,287		6,625,027		6,870,176
FHLB stock	114,381		114,381		150,543		150,543
Liabilities:
Deposits	5,119,829		5,163,254		4,832,520		4,869,312
FHLB borrowings	2,471,656		2,541,045		3,270,521		3,339,650
Repurchase agreements	200,000		208,779		200,000		209,807