Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013
ASSETS:
Cash and cash equivalents (includes interest-earning deposits of $94,431 and $99,735)	$ 114,835	$ 113,886
Securities:
Available-for-sale ("AFS") at estimated fair value (amortized cost of $887,543 and $1,058,283)	895,623	1,069,967
Held-to-maturity ("HTM") at amortized cost (estimated fair value of $1,735,084 and $1,741,846)	1,720,283	1,718,023
Loans receivable, net (allowance for credit losses ("ACL") of $8,967 and $8,822)	6,053,897	5,958,868
Bank-owned life insurance ("BOLI")	60,163	59,495
Capital stock of Federal Home Loan Bank ("FHLB"), at cost	125,829	128,530
Accrued interest receivable	23,192	23,596
Premises and equipment, net	70,218	70,112
Other real estate owned ("OREO")	3,667	3,882
Other assets	47,710	40,090
TOTAL ASSETS	9,115,417	9,186,449
LIABILITIES:
Deposits	4,693,762	4,611,446
FHLB borrowings	2,467,169	2,513,538
Repurchase agreements	320,000	320,000
Advance payments by borrowers for taxes and insurance	50,169	57,392
Income taxes payable	3,021	108
Deferred income tax liabilities, net	20,781	20,437
Accounts payable and accrued expenses	30,510	31,402
Total liabilities	7,585,412	7,554,323
STOCKHOLDERS' EQUITY:
Preferred stock ($0.01 par value) 100,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock ($0.01 par value) 1,400,000,000 shares authorized; 143,120,893 and 147,840,268 shares issued and outstanding as of March 31, 2014 and September 30, 2013, respectively	1,431	1,478
Additional paid-in capital	1,197,668	1,235,781
Unearned compensation, Employee Stock Ownership Plan ("ESOP")	(43,777)	(44,603)
Retained earnings	369,657	432,203
Accumulated other comprehensive income ("AOCI"), net of tax	5,026	7,267
Total stockholders' equity	1,530,005	1,632,126
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,115,417	$ 9,186,449