Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
ASSETS
Loans	$ 16,910,790	$ 16,103,651
Allowance for credit losses on loans	(200,563)	(215,973)
Net loans	16,710,227	15,887,678
Loans held for sale	5,303	6,708
Securities:
Available for sale (amortized cost of $10,062,576 and $8,887,734, respectively)	10,347,531	9,299,688
Held to maturity, net of allowance for credit losses of $2,836 and $2,610, respectively (fair value of $1,065,118 and $1,029,444, respectively)	1,081,173	1,012,004
Trading securities	40,552	35,020
Other securities	254,315	296,053
Total securities	11,723,571	10,642,765
Federal funds sold and securities purchased under agreements to resell	1,146,521	1,650,335
Interest-bearing due from banks	5,059,098	3,110,042
Cash and due from banks	469,883	430,638
Premises and equipment, net	281,011	293,095
Accrued income	131,188	139,892
Goodwill	174,518	180,867
Other intangibles, net	16,636	21,056
Other assets	901,059	764,428
Total assets	36,619,015	33,127,504
Deposits:
Noninterest-bearing demand	12,513,031	9,879,970
Interest-bearing demand and savings	16,857,127	16,295,186
Time deposits under $250,000	430,713	477,748
Time deposits of $250,000 or more	247,600	398,347
Total deposits	30,048,471	27,051,251
Federal funds purchased and repurchase agreements	2,783,389	2,315,497
Long-term debt	270,558	269,595
Accrued expenses and taxes	254,589	319,676
Other liabilities	171,764	154,537
Total liabilities	33,528,771	30,110,556
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 80,000,000 shares authorized; 55,056,730 shares issued, 48,346,371 and 48,006,386 shares outstanding, respectively	55,057	55,057
Capital surplus	1,098,139	1,090,450
Retained earnings	2,040,134	1,891,246
Accumulated other comprehensive income, net	223,107	318,340
Treasury stock, 6,710,359 and 7,050,344 shares, at cost, respectively	(326,193)	(338,145)
Total shareholders' equity	3,090,244	3,016,948
Total liabilities and shareholders' equity	$ 36,619,015	$ 33,127,504