CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income before noncontrolling interest	$ 159,354	$ 145,745	$ 109,344
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion, net	61,601	59,047	60,745
Provision for credit losses	28,538	49,766	64,776
Provision (reversal of) for deferred taxes	17,587	(1,639)	(2,347)
Originations of loans held for sale	(985,330)	(601,481)	(98,798)
Proceeds from sales of loans held for sale	1,059,361	890,340	319,123
Net change in loans held for sale	12,819	588	22,855
Fair value adjustment of foreclosed real estate	301	591	568
Net realized (gain) on securities available for sale, net	(154)	(6)	(51)
Net realized (gain) loss on loans held for sale	3,694	(8,610)	(5,389)
Net realized loss on premise, furniture, and equipment	55	0	0
Net realized (gain) on lease receivables and equipment	(3,397)	(2,257)	(4,335)
Net realized (gain) on foreclosed real estate and repossessed assets	0	(4)	4,960
Net realized (gain) on divestitures	0	0	(19,275)
Net realized (gain) on trademarks	(50,000)	0	0
Net realized (gain) loss on other assets	1,441	28	361
Change in bank-owned life insurance value	(2,434)	(2,434)	(2,488)
Impairment on rental equipment	0	0	447
Impairment of intangibles	670	0	0
Impairment on assets held for sale	0	0	242
Net change in accrued interest receivable	(1,725)	374	2,050
Net change in other assets	(32,936)	825	1,524
Net change in deposits held for sale	0	0	1,535
Net change in accrued expenses and other liabilities	(10,640)	43,920	1,152
Stock compensation	10,004	6,852	10,221
Net cash provided by operating activities	268,809	581,645	467,220
Cash flows from investing activities:
Purchases of securities available for sale	(907,361)	(1,041,768)	(229,326)
Proceeds from sales of securities available for sale	265,951	50,468	4,904
Proceeds from maturities of and principal collected on securities available for sale	324,234	371,898	237,254
Proceeds from maturities of and principal collected on securities held to maturity	14,281	34,268	40,017
Purchases of Federal Reserve Bank and Federal Home Loan Bank stock	(173,653)	(1,296)	(472,000)
Redemption of Federal Reserve Bank and Federal Home Loan Bank stock	173,240	34	475,778
Purchases of loans and leases	(115,353)	(311,332)	(151,435)
Proceeds from sales of loans and leases	123,241	13,850	9,991
Net change in loans and leases	358,635	(196,356)	(100,508)
Purchases of premises, furniture, and equipment	(8,177)	(12,961)	(12,266)
Proceeds from sales of premises, furniture, and equipment	35	86	107
Purchases of rental equipment	(424,919)	(50,437)	(53,637)
Proceeds from sales of rental equipment	9,372	16,822	14,692
Net change in rental equipment	(5,772)	(630)	2,623
Proceeds from sales of foreclosed real estate and repossessed assets	1,824	8,952	23,992
Proceeds from divestitures	0	0	3,498
Proceeds from sale of trademarks	50,000	0	0
Proceeds from sale of other assets	3,550	0	0
Net cash (used in) investing activities	(310,872)	(1,118,402)	(206,316)
Cash flows from financing activities:
Net change in deposits	351,066	535,771	931,128
Net change in short-term borrowings	0	0	(756,019)
Redemption of long-term borrowings	(75,000)	0	0
Proceeds from long-term borrowings	20,000	0	0
Principal payments on capital lease obligations	(75)	(32)	(1,737)
Principal payments on other liabilities	(2,751)	(5,611)	(7,568)
Proceeds from other liabilities	0	80	1,633
Dividends paid on common stock	(5,921)	(6,400)	(7,100)
Issuance of common stock due to exercise of stock options	0	0	266
Issuance of common stock due to restricted stock	1	0	2
Issuance of common stock due to ESOP	2,886	3,036	3,220
Repurchases of common stock	(168,235)	(99,878)	(118,738)
Distributions to noncontrolling interest	(4,153)	(4,033)	(5,068)
Net cash provided by financing activities	117,818	422,933	40,019
Effect of exchange rate changes on cash	(1,736)	476	(101)
Net change in cash and cash equivalents	74,019	(113,348)	300,822
Cash and cash equivalents at beginning of fiscal year	314,019	427,367	126,545
Cash and cash equivalents at end of fiscal period	388,038	314,019	427,367
Supplemental disclosure of cash flow information:
Interest	5,259	8,207	41,294
Income taxes	13,940	8,038	6,223
Franchise taxes	250	250	281
Other taxes	541	722	535
Supplemental schedule of non-cash investing activities:
Held for sale to loans and leases	115,934	36,919	0
Loans and leases to held for sale	169,045	188,638	542,101
Loans and leases to rental equipment	3,893	28,604	2,134
Loans and leases to foreclosed real estate and repossessed assets	49	9	9,983
Rental equipment to loan and leases	400,148	24,324	8,924
Rental equipment to foreclosed real estate and repossessed assets	0	1,650	0
Other assets to held for sale	0	0	7,858
Deposits to held for sale	0	0	288,975
Recognition of operating lease ROU assets, net of measurements	$ 117	$ 12,954	$ 28,666