Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Interest income:
Loans, including fees	$ 87,630	$ 91,816	$ 169,118	$ 183,930
Investment securities:
Taxable	16,938	5,014	30,128	9,889
Tax-exempt	351	377	701	772
Other interest income	4,665	772	6,069	1,262
Total interest income	109,584	97,979	206,016	195,853
Interest expense:
Savings deposits	1,296	990	2,397	1,919
Time deposits	2,277	2,929	4,781	6,127
Securities sold under repurchase agreements	241	142	425	283
Other borrowings	1,907	1,908	3,795	3,797
Junior subordinated deferrable interest debentures	962	702	1,671	1,410
Total interest expense	6,683	6,671	13,069	13,536
Net interest income	102,901	91,308	192,947	182,317
Provision for credit losses	3,735	1,144	5,216	2,336
Net interest income after provision for credit losses	99,166	90,164	187,731	179,981
Non-interest income:
Investment securities transactions, net				(4)
Other investments, net	1,219	58,920	4,101	63,005
Other income	8,798	7,634	17,890	11,264
Total non-interest income	43,242	97,906	86,754	134,143
Non-interest expense:
Employee compensation and benefits	31,045	30,548	62,164	60,710
Occupancy	6,189	6,530	12,461	12,147
Depreciation of bank premises and equipment	5,455	6,436	10,930	13,235
Professional fees	2,942	2,281	5,260	5,117
Deposit insurance assessments	1,979	927	3,036	1,814
Net operations, other real estate owned	(47)	3,668	(455)	4,913
Advertising	1,455	1,456	2,895	2,879
Software and software maintenance	4,372	4,526	8,549	8,966
Other	15,366	13,582	28,034	22,358
Total non-interest expense	68,756	69,954	132,874	132,139
Income before income taxes	73,652	118,116	141,611	181,985
Provision for income taxes	15,681	26,090	30,147	39,188
Net income	$ 57,971	$ 92,026	$ 111,464	$ 142,797
Basic earnings per common share:
Weighted average number of shares outstanding (in shares)	62,950,103	63,362,817	63,150,061	63,335,289
Net income (in dollars per share)	$ 0.92	$ 1.45	$ 1.77	$ 2.25
Fully diluted earnings per common share:
Weighted average number of shares outstanding (in shares)	63,085,429	63,518,556	63,290,738	63,469,284
Net income (in dollars per share)	$ 0.92	$ 1.45	$ 1.76	$ 2.25
Services charges on deposit accounts
Non-interest income:
Service charges	$ 18,248	$ 15,774	$ 35,505	$ 30,677
Other service charges, commissions and fees, Banking
Non-interest income:
Service charges	12,935	13,233	25,451	25,416
Other service charges, commissions and fees, Non-banking
Non-interest income:
Service charges	$ 2,042	$ 2,345	$ 3,807	$ 3,785