Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Loans	$ 17,731,700	$ 17,170,871
Allowance for credit losses on loans	(179,288)	(194,771)
Net loans	17,552,412	16,976,100
Loans held for sale	384	1,277
Securities:
Available for sale (amortized cost of $8,898,849 and $11,822,584, respectively)	8,550,093	11,976,514
Held to maturity, net of allowance for credit losses of $2,045 and $1,940, respectively (fair value of $4,393,455 and $1,442,391, respectively)	4,600,187	1,478,476
Trading securities	17,059	31,875
Other securities	332,123	327,098
Total securities	13,499,462	13,813,963
Federal funds sold and securities purchased under agreements to resell	1,319,809	1,216,357
Interest-bearing due from banks	6,355,941	8,841,906
Cash and due from banks	357,772	413,821
Premises and equipment, net	264,519	270,933
Accrued income	127,139	131,102
Goodwill	182,225	174,518
Other intangibles, net	15,690	14,416
Other assets	930,389	839,091
Total assets	40,605,742	42,693,484
Deposits:
Noninterest-bearing demand	15,946,738	16,342,642
Interest-bearing demand and savings	17,828,794	18,405,644
Time deposits under $250,000	399,467	403,660
Time deposits of $250,000 or more	187,566	447,981
Total deposits	34,362,565	35,599,927
Federal funds purchased and repurchase agreements	2,840,535	3,238,435
Long-term debt	272,036	271,544
Accrued expenses and taxes	178,130	249,492
Other liabilities	204,071	188,662
Total liabilities	37,857,337	39,548,060
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 80,000,000 shares authorized; 55,056,730 shares issued, 48,403,262 and 48,430,805 shares outstanding, respectively	55,057	55,057
Capital surplus	1,109,585	1,110,520
Retained earnings	2,265,129	2,176,998
Accumulated other comprehensive (loss) income, net	(343,128)	126,314
Treasury stock, 6,653,468 and 6,625,925 shares, at cost, respectively	(338,238)	(323,465)
Total shareholders' equity	2,748,405	3,145,424
Total liabilities and shareholders' equity	$ 40,605,742	$ 42,693,484