Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
ASSETS:
Cash and cash equivalents (includes interest-earning deposits of $799,340 and $99,735)	$ 810,840	$ 113,886
Securities:
Available-for-sale (AFS), at estimated fair value (amortized cost of $829,558 and $1,058,283)	840,790	1,069,967
Held-to-maturity (HTM), at amortized cost (estimated fair value of $1,571,524 and $1,741,846)	1,552,699	1,718,023
Loans receivable, net (allowance for credit losses (ACL) of $9,227 and $8,822)	6,233,170	5,958,868
Federal Home Loan Bank Topeka (FHLB) stock, at cost	213,054	128,530
Premises and equipment, net	70,530	70,112
Other assets	143,945	127,063
TOTAL ASSETS	9,865,028	9,186,449
LIABILITIES:
Deposits	4,655,272	4,611,446
FHLB borrowings	3,369,677	2,513,538
Repurchase agreements	220,000	320,000
Advance payments by borrowers for taxes and insurance	58,105	57,392
Income taxes payable	368	108
Deferred income tax liabilities, net	22,367	20,437
Accounts payable and accrued expenses	46,357	31,402
Total liabilities	8,372,146	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; 140,951,203 and 147,840,268 shares issued and outstanding as of September 30, 2014 and 2013, respectively	1,410	1,478
Additional paid-in capital	1,180,732	1,235,781
Unearned compensation - Employee Stock Ownership Plan (ESOP)	(42,951)	(44,603)
Retained earnings	346,705	432,203
Accumulated other comprehensive income (AOCI), net of tax	6,986	7,267
Total stockholders' equity	1,492,882	1,632,126
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,865,028	$ 9,186,449