Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 289,030	$ 228,819
Interest-bearing deposits with banks	3,590,311	1,821,203
Federal funds sold	1,525	800
Debt securities held for investment (fair value: $2,392 and $2,978, respectively)	2,391	2,977
Debt securities available for sale at fair value	1,203,503	531,523
Loans held for sale	7,360	24,776
Loans held for investment (net of unearned interest)	6,613,283	6,169,442
Allowance for credit losses	(86,935)	(83,936)
Loans, net of allowance for credit losses	6,526,348	6,085,506
Premises and equipment, net	279,609	269,047
Other real estate owned	39,097	39,475
Intangible assets, net	21,743	17,566
Goodwill	183,639	149,922
Accrued interest receivable and other assets	385,517	233,998
Total assets	12,530,073	9,405,612
Deposits:
Noninterest-bearing	5,228,774	3,775,387
Interest-bearing	5,913,914	4,316,527
Total deposits	11,142,688	8,091,914
Short-term borrowings	6,100	0
Accrued interest payable and other liabilities	109,575	55,977
Subordinated debt	86,015	85,987
Total liabilities	11,344,378	8,233,878
Stockholders' equity:
Common stock, $1.00 par, 40,000,000 shares authorized; shares issued and outstanding: 32,781,198 and 32,603,118, respectively	32,781	32,603
Capital surplus	165,295	159,914
Retained earnings	1,034,107	977,067
Accumulated other comprehensive (loss) income, net of tax of $14,406 and $(684), respectively	(46,488)	2,150
Total stockholders' equity	1,185,695	1,171,734
Total liabilities and stockholders' equity	12,530,073	9,405,612
Senior Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value
Cumulative Preferred Stock [Member]
Stockholders' equity:
Preferred stock, value