Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
ASSETS
Cash and due from banks	$ 259,587	$ 237,840
Interest-bearing deposits with banks	3,737,763	3,315,932
Federal funds sold	0	715
Debt securities held for investment (fair value: $561 and $837, respectively)	561	837
Debt securities available for sale at fair value	1,104,043	1,210,917
Loans held for sale	10,009	8,073
Loans held for investment (net of unearned interest)	8,114,488	8,025,110
Allowance for credit losses	(96,988)	(99,497)
Loans, net of allowance for credit losses	8,017,500	7,925,613
Premises and equipment, net	312,151	295,943
Other real estate owned	52,196	33,051
Intangible assets, net	11,410	13,158
Goodwill	182,263	182,263
Accrued interest receivable and other assets	358,297	329,972
Total assets	14,045,780	13,554,314
Deposits:
Noninterest-bearing	3,967,626	3,907,060
Interest-bearing	8,088,566	7,811,486
Total deposits	12,056,192	11,718,546
Short-term borrowings	5,860	0
Accrued interest payable and other liabilities	169,505	128,424
Subordinated debt	86,185	86,157
Total liabilities	12,317,742	11,933,127
Stockholders' equity:
Common stock, $1.00 par, 40,000,000 shares authorized; shares issued and outstanding: 33,272,131 and 33,216,519, respectively	33,272	33,217
Capital surplus	190,698	187,062
Retained earnings	1,521,631	1,433,768
Accumulated other comprehensive loss, net of tax benefit of $5,442 and $10,191, respectively	(17,563)	(32,860)
Total stockholders' equity	1,728,038	1,621,187
Total liabilities and stockholders' equity	14,045,780	13,554,314
Senior Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value
Cumulative Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value