Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
ASSETS
Loans	$ 23,637,649	$ 23,172,484
Allowance for credit losses on loans	(226,159)	(219,738)
Net loans	23,411,490	22,952,746
Loans held for sale	4,415	4,420
Securities:
Available for sale (amortized cost of $7,207,331 and $7,692,860, respectively)	6,541,391	7,068,613
Held to maturity, net of allowance for credit losses of $3,820 and $3,258, respectively (fair value of $5,025,138 and $5,183,367, respectively)	5,622,617	5,688,610
Trading securities	40,187	18,093
Other securities	473,434	492,935
Total securities	12,677,629	13,268,251
Federal funds sold and securities purchased under agreements to resell	180,275	245,344
Interest-bearing due from banks	6,673,104	5,159,802
Cash and due from banks	356,963	447,201
Premises and equipment, net	231,918	241,700
Accrued income	221,447	220,306
Goodwill	207,385	207,385
Other intangibles, net	69,052	71,012
Other assets	1,309,697	1,193,507
Total assets	45,343,375	44,011,674
Deposits:
Noninterest-bearing demand	13,251,090	12,130,662
Interest-bearing demand and savings	21,018,911	20,588,606
Time deposits under $250,000	2,044,280	2,292,899
Time deposits of $250,000 or more	599,329	780,692
Total deposits	36,913,610	35,792,859
Federal funds purchased and repurchase agreements	2,225,474	2,119,644
Short-term debt	1,800,000	1,800,000
Long-term debt	383,742	383,247
Accrued expenses and taxes	374,888	389,860
Other liabilities	492,845	425,645
Total liabilities	42,190,559	40,911,255
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 80,000,000 shares authorized; 55,056,730 shares issued, 48,743,348 and 48,554,127 shares outstanding, respectively	55,057	55,057
Capital surplus	1,127,806	1,134,363
Retained earnings	2,903,106	2,810,824
Accumulated other comprehensive loss, net	(594,538)	(556,935)
Treasury stock, 6,313,382 and 6,502,603 shares, at cost, respectively	(338,615)	(342,890)
Total shareholders' equity	3,152,816	3,100,419
Total liabilities and shareholders' equity	$ 45,343,375	$ 44,011,674