Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
INTEREST AND DIVIDEND INCOME:
Loans receivable	$ 229,944	$ 228,455	$ 236,225
Mortgage-backed securities (MBS)	45,300	55,424	71,156
Investment securities	7,385	10,012	15,944
FHLB stock	6,555	4,515	4,446
Cash and cash equivalents	1,062	148	280
Total interest and dividend income	290,246	298,554	328,051
INTEREST EXPENSE:
FHLB borrowings	63,217	70,816	82,044
Deposits	32,604	36,816	46,170
Repurchase agreements	10,282	12,762	14,956
Total interest expense	106,103	120,394	143,170
NET INTEREST INCOME	184,143	178,160	184,881
PROVISION FOR CREDIT LOSSES	1,409	(1,067)	2,040
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	182,734	179,227	182,841
NON-INTEREST INCOME:
Retail fees and charges	14,937	15,342	15,915
Insurance commissions	3,151	2,925	2,772
Loan fees	1,568	1,727	2,113
Income from bank-owned life insurance (BOLI)	1,993	1,483	1,478
Other non-interest income	1,306	1,812	1,955
Total non-interest income	22,955	23,289	24,233
NON-INTEREST EXPENSE:
Salaries and employee benefits	43,757	49,152	44,235
Occupancy	10,268	9,871	8,751
Information technology and communications	9,429	8,855	7,583
Regulatory and outside services	5,572	5,874	5,291
Deposit and loan transaction costs	5,329	5,547	5,381
Federal insurance premium	4,536	4,462	4,444
Advertising and promotional	4,195	5,027	3,931
Other non-interest expense	7,451	8,159	11,459
Total non-interest expense	90,537	96,947	91,075
INCOME BEFORE INCOME TAX EXPENSE	115,152	105,569	115,999
INCOME TAX EXPENSE	37,458	36,229	41,486
NET INCOME	$ 77,694	$ 69,340	$ 74,513
Basic earnings per share	$ 0.56	$ 0.48	$ 0.47
Diluted earnings per share	$ 0.56	$ 0.48	$ 0.47
Dividends declared per share	$ 0.98	$ 1.00	$ 0.40