Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Cash and non-interest bearing balances due from banks	$ 225,500	$ 217,499
Interest bearing balances due from banks and federal funds sold	1,555,913	3,254,653
Cash and cash equivalents	1,781,413	3,472,152
Interest bearing balances due from banks - time	1,780	1,579
Investment securities:
Held-to-maturity, net of allowance for credit losses of $1,279 and $2,915 at September 30, 2021 and December 31, 2020, respectively	1,516,797	333,031
Available-for-sale securities	6,822,203	3,473,598
Total investments	8,339,000	3,806,629
Mortgage loans held for sale	34,628	137,378
Loans	10,825,227	12,900,897
Allowance for credit losses on loans	(202,508)	(238,050)
Net loans	10,622,719	12,662,847
Premises and equipment	463,924	441,692
Premises held for sale	0	15,008
Foreclosed assets and other real estate owned	11,759	18,393
Interest receivable	68,405	72,597
Bank owned life insurance	421,762	255,630
Goodwill	1,075,305	1,075,305
Other intangible assets	100,428	111,110
Other assets	304,807	289,432
Total assets	23,225,930	22,359,752
Deposits:
Non-interest bearing transaction accounts	4,918,845	4,482,091
Interest bearing transaction accounts and savings deposits	10,697,451	9,672,608
Time deposits	2,455,774	2,832,327
Total deposits	18,072,070	16,987,026
Federal funds purchased and securities sold under agreements to repurchase	217,276	299,111
Other borrowings	1,338,585	1,342,067
Subordinated notes and debentures	383,278	382,874
Other liabilities held for sale	0	154,620
Accrued interest and other liabilities	184,190	217,398
Total liabilities	20,195,399	19,383,096
Stockholders’ equity:
Preferred stock, 40,040,000 shares authorized; Series D, $0.01 par value, $1,000 liquidation value per share; 767 shares issued and outstanding at September 30, 2021 and December 31, 2020	767	767
Common stock, Class A, $0.01 par value; 175,000,000 shares authorized at September 30, 2021 and December 31, 2020; 106,603,231 and 108,077,662 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	1,066	1,081
Surplus	1,974,561	2,014,076
Undivided profits	1,065,566	901,006
Accumulated other comprehensive (loss) income	(11,429)	59,726
Total stockholders’ equity	3,030,531	2,976,656
Total liabilities and stockholders’ equity	$ 23,225,930	$ 22,359,752