Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Interest income:
Interest and fees on loans	$ 338,694,000	$ 320,446,000	$ 262,423,000
Interest on investment securities
Taxable	21,593,000	21,273,000	24,949,000
Exempt from federal income tax	7,290,000	7,563,000	7,170,000
Interest on certificates of deposit	103,000	144,000	98,000
Interest on federal funds sold	3,000	53,000	419,000
Interest on deposits with other financial institutions	5,307,000	7,900,000	5,107,000
Total interest income	372,990,000	357,379,000	300,166,000
Interest expense:
Interest on deposits	98,327,000	106,919,000	77,294,000
Interest on securities sold under repurchase agreements with customers	4,490,000	6,448,000	6,565,000
Interest on other borrowings	8,401,000	8,674,000	16,789,000
Interest on junior subordinated debentures	1,817,000	2,156,000	1,859,000
Interest on subordinated debt	3,790,000	4,454,000	4,196,000
Total interest expense	116,825,000	128,651,000	106,703,000
Net interest income	256,165,000	228,728,000	193,463,000
Provision for credit losses	9,921,000	5,635,000	6,104,000
Net interest income after provision for credit losses	246,244,000	223,093,000	187,359,000
Other income:
Wealth management revenues	22,941,000	22,818,000	20,793,000
Insurance commissions	32,295,000	28,552,000	24,814,000
Service charges	12,297,000	12,362,000	10,881,000
Securities gains (losses), net	(2,509,000)	(433,000)	3,383,000
Mortgage banking revenue, net	3,660,000	3,957,000	2,282,000
ATM / debit card revenue	16,411,000	16,807,000	14,347,000
Bank owned life insurance	5,475,000	4,728,000	4,957,000
Other income	2,481,000	7,495,000	5,329,000
Total other income	93,051,000	96,286,000	86,786,000
Other expense:
Salaries and employee benefits	134,615,000	124,134,000	104,962,000
Net occupancy and equipment expense	36,579,000	30,407,000	26,946,000
Net other real estate owned expense	539,000	411,000	1,862,000
FDIC insurance expense	3,476,000	3,463,000	3,339,000
Amortization of intangible assets	12,443,000	13,556,000	9,127,000
Stationery and supplies	1,770,000	1,885,000	1,346,000
Legal and professional	10,746,000	12,944,000	7,379,000
ATM / debit card expense	6,945,000	6,384,000	5,322,000
Marketing and donations	3,348,000	3,418,000	3,005,000
Other expense	11,786,000	18,381,000	22,452,000
Total other expense	222,247,000	214,983,000	185,740,000
Income before income taxes	117,048,000	104,396,000	88,405,000
Income taxes	25,299,000	25,498,000	19,470,000
Net income	$ 91,749,000	$ 78,898,000	$ 68,935,000
Per share data:
Basic net income per common share	$ 3.84	$ 3.31	$ 3.17
Diluted net income per common share	3.83	3.3	3.15
Cash dividends declared per common share	$ 98	$ 94	$ 92