CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 40,236	$ 35,282
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of fees, discounts, premiums and intangible assets, net	1,057	536
Cash received from FDIC under loss share	1,295	4,566
Depreciation	2,700	2,300
Stock option compensation expense	300	300
Provision for (reversal of) loan losses	(4,600)	3,600
Loss (gain) on real estate held for sale, net	(597)	1,193
Decrease (increase) in accrued interest receivable	(411)	1,058
Decrease (increase) in income taxes receivable	22,629	(3,038)
Decrease in other assets	1,649	30,191
Decrease in accrued expenses and other liabilities	(12,768)	(15,437)
Net cash provided by operating activities	51,490	60,551
CASH FLOWS FROM INVESTING ACTIVITIES
Net principal collections (loan originations)	(68,870)	187,382
FHLB stock redemptions	1,376	1,382
Available-for-sale securities purchased	(565,080)	(261,966)
Principal payments and maturities of available-for-sale securities	76,805	31,404
Available-for-sale securities sold	0	43,899
Held-to-maturity securities purchased	0	(264,781)
Principal payments and maturities of available-for-sale securities	23,117	50,522
Net cash received from acquisition	1,280,077	202,308
Proceeds from sales of real estate held for sale	12,566	24,370
Proceeds from sales of covered REO	6,098	3,043
Proceeds from sales of real estate held for investment	1,729	5,775
Premises and equipment purchased and REO improvements	(9,232)	(12,185)
Net cash provided by investing activities	758,586	11,153
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in customer accounts	(1,795)	(77,942)
Proceeds from borrowings	625,000	0
Repayments of borrowings	(625,000)	(22,471)
Proceeds from exercise of common stock options	9,280	63
Dividends paid on common stock	(10,179)	(17,250)
Treasury stock purchased	(18,945)	(44,747)
Decrease in advance payments by borrowers for taxes and insurance	(24,652)	(23,489)
Net cash used by financing activities	(46,291)	(185,836)
Increase (decrease) in cash and cash equivalents	763,785	(114,132)
Cash and cash equivalents at beginning of period	203,563	751,430
Cash and cash equivalents at end of period	967,348	637,298
Non-cash investing activities
Non-covered real estate acquired through foreclosure	9,956	22,762
Covered real estate acquired through foreclosure	179	3,096
Cash paid during the period for
Interest	33,644	37,457
Income taxes	(236)	0
The following summarizes the non-cash activities related to acquisitions
Fair value of assets acquired	65,531	810,766
Fair value of liabilities assumed	(1,345,608)	(766,871)
Net fair value of assets (liabilities)	$ (1,280,077)	$ 43,895