Consolidated Statements of Earnings - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
INTEREST INCOME:
Interest and fees on loans	$ 77,523,000	$ 70,588,000	$ 210,180,000	$ 203,902,000
Interest on investment securities:
Taxable	20,799,000	12,122,000	57,772,000	33,834,000
Exempt from federal income tax	12,974,000	14,249,000	41,686,000	42,058,000
Interest on federal funds sold and interest-bearing demand deposits in banks	1,432,000	239,000	2,080,000	616,000
Total interest income	112,728,000	97,198,000	311,718,000	280,410,000
INTEREST EXPENSE:
Interest on deposits	8,788,000	1,340,000	13,123,000	4,595,000
Interest on borrowings	784,000	76,000	1,217,000	260,000
Total interest expense	9,572,000	1,416,000	14,340,000	4,855,000
Net interest income	103,156,000	95,782,000	297,378,000	275,555,000
Provision for Credit losses	3,221,000	0	13,353,000	(3,203,000)
Net interest income after provision for credit losses	99,935,000	95,782,000	284,025,000	278,758,000
NONINTEREST INCOME:
Trust fees	10,314,000	9,484,000	29,873,000	26,475,000
Service charges on deposit accounts	6,399,000	5,673,000	18,143,000	15,394,000
Debit card fees	5,587,000	9,198,000	24,381,000	26,552,000
Credit card fees	651,000	595,000	1,953,000	1,771,000
Gain on sale and fees on mortgage loans	4,070,000	8,788,000	16,131,000	26,973,000
Net gain on sale of available-for-sale securities	334,000	1,000	2,013,000	814,000
Net gain on sale of foreclosed assets	349,000	27,000	1,451,000	83,000
Net gain (loss) on sale of other assets	526,000	(6,000)	522,000	213,000
Interest on loan recoveries	664,000	1,746,000	2,596,000	2,832,000
Other	2,049,000	2,220,000	6,078,000	6,166,000
Total noninterest income	30,943,000	37,726,000	103,141,000	107,273,000
NONINTEREST EXPENSE:
Salaries, commissions and employee benefits	33,892,000	37,090,000	101,177,000	107,067,000
Net occupancy expense	3,440,000	3,288,000	9,957,000	9,676,000
Equipment expense	2,396,000	2,450,000	6,999,000	6,791,000
FDIC insurance premiums	917,000	815,000	2,690,000	2,282,000
Debit card expense	3,013,000	2,929,000	9,177,000	8,736,000
Professional and service fees	2,219,000	2,406,000	6,635,000	6,936,000
Printing, stationery and supplies	600,000	432,000	1,641,000	1,246,000
Operational and other losses	869,000	1,087,000	2,247,000	1,908,000
Software amortization and expense	2,564,000	2,855,000	7,543,000	8,303,000
Amortization of intangible assets	306,000	398,000	946,000	1,222,000
Other	9,226,000	9,189,000	27,988,000	25,869,000
Total noninterest expense	59,442,000	62,939,000	177,000,000	180,036,000
EARNINGS BEFORE INCOME TAXES	71,436,000	70,569,000	210,166,000	205,995,000
INCOME TAX EXPENSE	12,095,000	11,641,000	34,359,000	33,770,000
NET EARNINGS	$ 59,341,000	$ 58,928,000	$ 175,807,000	$ 172,225,000
NET EARNINGS PER SHARE, BASIC	$ 0.42	$ 0.41	$ 1.23	$ 1.21
NET EARNINGS PER SHARE, DILUTED	0.41	0.41	1.23	1.20
DIVIDENDS PER SHARE	$ 0.17	$ 0.15	$ 0.49	$ 0.43