Consolidated Statements of Earnings - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
INTEREST INCOME:
Interest and fees on loans	$ 502,945	$ 405,939	$ 296,114
Interest on investment securities:
Taxable	81,626	79,925	78,924
Exempt from federal income tax	30,908	36,194	54,121
Interest on federal funds sold and interest-bearing deposits in banks	13,439	6,012	3,695
Total interest income	628,918	528,070	432,854
INTEREST EXPENSE:
Interest on deposits	194,800	124,830	26,246
Interest on borrowings	7,377	19,431	5,194
Total interest expense	202,177	144,261	31,440
Net interest income	426,741	383,809	401,414
PROVISION FOR CREDIT LOSSES	13,821	10,631	17,427
Net interest income after provisions for credit losses	412,920	373,178	383,987
NONINTEREST INCOME:
Trust fees	47,449	40,456	39,995
Service charges on deposit accounts	24,988	25,378	24,540
Debit card fees	21,070	21,721	30,280
Credit card fees	2,537	2,645	2,585
Gain on sale and fees on mortgage loans	13,183	11,890	19,035
Net gain (loss) on sale of available-for-sale securities	0	(7,119)	2,144
Net gain (loss) on sale of foreclosed assets	(51)	46	1,451
Net gain on sale of assets	484	1,525	520
Interest on loan recoveries	3,010	2,055	2,840
Other	11,319	9,406	8,275
Total noninterest income	123,989	108,003	131,665
NONINTEREST EXPENSE:
Salaries, commissions and employee benefits	153,296	131,915	134,133
Net occupancy expense	14,579	13,766	13,307
Equipment expense	9,065	8,545	9,052
FDIC insurance premiums	6,498	7,749	3,711
Debit card expense	12,768	12,933	12,231
Professional and service fees	10,690	9,810	8,770
Printing, stationery and supplies	1,364	2,454	2,114
Operational and other losses	3,741	3,842	3,229
Software amortization and expense	13,523	10,288	9,963
Amortization of intangible assets	618	912	1,245
Other	38,921	35,668	37,023
Total noninterest expense	265,063	237,882	234,778
Earnings before income taxes	271,846	243,299	280,874
INCOME TAX EXPENSE	48,335	44,322	46,399
NET EARNINGS	$ 223,511	$ 198,977	$ 234,475
NET EARNINGS PER SHARE, BASIC	$ 1.56	$ 1.39	$ 1.64
NET EARNINGS PER SHARE, DILUTED	1.56	1.39	1.64
DIVIDENDS PER SHARE	$ 0.72	$ 0.71	$ 0.66