Consolidated Statements of Earnings - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
INTEREST INCOME:
Interest and fees on loans	$ 64,499,000	$ 66,435,000
Interest on investment securities:
Taxable	17,823,000	10,264,000
Exempt from federal income tax	14,593,000	13,749,000
Interest on federal funds sold and interest-bearing demand deposits in banks	94,000	162,000
Total interest income	97,009,000	90,610,000
INTEREST EXPENSE:
Interest on deposits	1,370,000	1,695,000
Other	200,000	91,000
Total interest expense	1,570,000	1,786,000
Net interest income	95,439,000	88,824,000
Provision for Credit losses	4,782,000	(1,997,000)
Net interest income after provision for credit losses	90,657,000	90,821,000
NONINTEREST INCOME:
Trust fees	9,817,000	8,299,000
Service charges on deposit accounts	5,706,000	4,793,000
ATM, interchange and credit card fees	9,528,000	8,677,000
Gain on sale and fees on mortgage loans	6,333,000	9,894,000
Net gain on available-for-sale securities	31,000	808,000
Net gain on sale of foreclosed assets	1,084,000	55,000
Net gain (loss) on sale of assets	(10,000)	145,000
Interest on loan recoveries	283,000	382,000
Other	2,109,000	1,821,000
Total noninterest income	34,881,000	34,874,000
NONINTEREST EXPENSE:
Salaries, commissions and employee benefits	34,138,000	34,931,000
Net occupancy expense	3,225,000	3,147,000
Equipment expense	2,257,000	2,164,000
FDIC insurance premiums	869,000	701,000
ATM, interchange and credit card expenses	2,968,000	2,772,000
Professional and service fees	2,225,000	2,139,000
Printing, stationery and supplies	540,000	325,000
Operational and other losses	596,000	287,000
Software amortization and expense	2,457,000	2,619,000
Amortization of intangible assets	320,000	412,000
Other	9,630,000	8,226,000
Total noninterest expense	59,225,000	57,723,000
EARNINGS BEFORE INCOME TAXES	66,313,000	67,972,000
INCOME TAX EXPENSE	10,341,000	11,054,000
NET EARNINGS	$ 55,972,000	$ 56,918,000
NET EARNINGS PER SHARE, BASIC	$ 0.39	$ 0.40
NET EARNINGS PER SHARE, DILUTED	0.39	0.40
DIVIDENDS PER SHARE	$ 0.15	$ 0.13