Consolidated Balance Sheets - USD ($)	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
ASSETS
CASH AND DUE FROM BANKS	$ 222,464,000	$ 281,354,000	$ 224,875,000
FEDERAL FUNDS SOLD	12,300,000	0	0
INTEREST-BEARING DEMAND DEPOSITS IN BANKS	365,397,000	255,237,000	221,336,000
Total cash and cash equivalents	600,161,000	536,591,000	446,211,000
SECURITIES AVAILABLE-FOR-SALE, at fair value (amortized cost of these securities was $5,217,517, $5,879,040, and $5,243,681 as of March 31, 2024 and 2023, and December 31, 2023, respectively)	4,658,526,000	4,732,762,000	5,298,557,000
LOANS:
Held-for-investment	7,229,410,000	7,148,791,000	6,576,215,000
Less—allowance for credit losses	(89,562,000)	(88,734,000)	(80,818,000)
Net loans held for investment	7,139,848,000	7,060,057,000	6,495,397,000
Held-for-sale ($15,080, $11,766 and $11,077, at fair value at March 31, 2024 and 2023, and December 31, 2023, respectively)	16,109,000	14,253,000	11,996,000
BANK PREMISES AND EQUIPMENT, net	151,953,000	151,788,000	153,718,000
INTANGIBLE ASSETS, net	314,465,000	314,622,000	315,306,000
OTHER ASSETS	310,096,000	295,521,000	286,801,000
Total assets	13,191,158,000	13,105,594,000	13,007,986,000
LIABILITIES AND SHAREHOLDERS' EQUITY
NONINTEREST-BEARING DEPOSITS	3,348,147,000	3,435,586,000	3,890,991,000
INTEREST-BEARING DEPOSITS	7,941,661,000	7,702,714,000	7,045,427,000
Total deposits	11,289,808,000	11,138,300,000	10,936,418,000
DIVIDENDS PAYABLE	25,754,000	25,712,000	24,274,000
REPURCHASE AGREEMENTS	307,297,000	381,928,000	608,299,000
BORROWINGS	26,803,000	22,153,000	24,628,000
OTHER LIABILITIES	50,129,000	38,601,000	41,514,000
Total liabilities	11,699,791,000	11,606,694,000	11,635,133,000
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY:
COMMON STOCK - ($0.01 par value, authorized 200,000,000 shares; 142,817,159, 142,703,531, and 142,716,939 shares issued at March 31, 2024 and 2023, and December 31, 2023, respectively)	1,428,000	1,427,000	1,427,000
CAPITAL SURPLUS	683,997,000	681,246,000	679,429,000
RETAINED EARNINGS	1,247,169,000	1,219,525,000	1,150,246,000
TREASURY STOCK (shares at cost: 931,427, 927,789 and 930,152 at March 31, 2024 and 2023, and December 31, 2023, respectively)	(12,120,000)	(11,855,000)	(11,271,000)
DEFERRED COMPENSATION	12,120,000	11,855,000	11,271,000
ACCUMULATED OTHER COMPREHENSIVE EARNINGS (LOSS), net	(441,227,000)	(403,298,000)	(458,249,000)
Total shareholders' equity	1,491,367,000	1,498,900,000	1,372,853,000
Total liabilities and shareholders' equity	$ 13,191,158,000	$ 13,105,594,000	$ 13,007,986,000