Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Interest and dividend income:
Loans and leases, including fees	$ 83,879	$ 75,540	$ 152,275	$ 140,575
Mortgage-backed securities	10,326	5,446	20,738	9,310
Other investments	10,482	4,191	16,734	8,183
Total interest and dividend income	104,687	85,177	189,747	158,068
Interest expense:
Deposits	2,096	165	2,238	306
FHLB advances and other borrowings	1,186	1,212	2,047	2,349
Total interest expense	3,282	1,377	4,285	2,655
Net interest income	101,405	83,800	185,462	155,413
Provision for credit losses	36,763	32,302	46,539	32,488
Net interest income after provision for credit losses	64,642	51,498	138,923	122,925
Noninterest income:
Gain (loss) on sale of securities	82	260	82	397
Gain on sale of trademarks	0	0	10,000	50,000
Gain (loss) on sale of other	(748)	626	(246)	(2,839)
Other income	4,477	3,881	8,032	5,542
Total noninterest income	127,038	109,766	192,815	196,357
Noninterest expense:
Compensation and benefits	47,547	45,047	90,564	83,272
Refund transfer product expense	7,863	6,260	7,968	6,398
Refund advance expense	1,603	2,002	1,630	2,185
Card processing	26,924	7,457	49,607	14,629
Occupancy and equipment expense	8,510	8,500	16,822	16,849
Operating lease equipment depreciation	14,719	8,737	24,347	17,185
Legal and consulting	4,921	9,347	14,380	15,555
Intangible amortization	1,435	2,169	2,693	3,657
Impairment expense	500	0	524	0
Other expense	13,114	13,641	23,660	25,866
Total noninterest expense	127,136	103,160	232,195	185,596
Income before income tax expense	64,544	58,104	99,543	133,686
Income tax expense	9,176	8,002	15,753	22,278
Net income before noncontrolling interest	55,368	50,102	83,790	111,408
Net income (loss) attributable to noncontrolling interest	597	851	1,177	833
Net income attributable to parent	$ 54,771	$ 49,251	$ 82,613	$ 110,575
Earnings per common share:
Basic (in dollars per share)	$ 1.99	$ 1.66	$ 2.95	$ 3.66
Diluted (in dollars per share)	$ 1.99	$ 1.66	$ 2.95	$ 3.66
Refund transfer product fees
Noninterest income:
Noninterest income	$ 30,205	$ 27,805	$ 30,882	$ 28,384
Refund advance fee income
Noninterest income:
Noninterest income	37,995	39,299	38,612	40,532
Card and deposit fees
Noninterest income:
Noninterest income	42,087	26,520	79,805	51,889
Rental income
Noninterest income:
Noninterest income	$ 12,940	$ 11,375	$ 25,648	$ 22,452