Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 638,296	$ 529,454
Interest-bearing deposits	15,601,647	9,758,624
Federal funds sold	6,125	775
Resell agreements	7,903	0
Total cash and cash equivalents	16,253,971	10,288,853
Securities held to maturity, net of allowance for credit losses of $158 at September 30, 2021 and $160 at December 31, 2020	1,759,270	1,945,673
Securities available for sale, at estimated fair value	11,731,222	10,437,565
Trading account securities	25,292	24,456
Loans, net of unearned discounts	15,832,670	17,481,309
Less: Allowance for credit losses on loans	(250,150)	(263,177)
Net loans	15,582,520	17,218,132
Premises and equipment, net	1,023,170	1,045,578
Goodwill	654,952	654,952
Other intangible assets, net	1,019	1,563
Cash surrender value of life insurance policies	189,941	189,984
Accrued interest receivable and other assets	638,968	584,561
Total assets	47,860,325	42,391,317
Liabilities:
Non-interest-bearing demand deposits	17,151,583	15,117,051
Interest-bearing deposits	22,461,184	19,898,710
Total deposits	39,612,767	35,015,761
Federal funds purchased	27,200	48,850
Repurchase agreements	2,200,029	2,068,147
Junior subordinated deferrable interest debentures, net of unamortized issuance costs	136,400	136,357
Subordinated notes, net of unamortized issuance costs	99,139	99,021
Accrued interest payable and other liabilities	1,412,428	730,165
Total liabilities	43,487,963	38,098,301
Shareholders’ Equity:
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; 150,000 Series B shares ($1,000 liquidation preference) issued at September 30, 2021 and December 31, 2020	145,452	145,452
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 64,236,306 shares issued at September 30, 2021 and December 31, 2020	642	642
Additional paid-in capital	1,004,924	997,168
Retained earnings	2,920,074	2,750,723
Accumulated other comprehensive income (loss), net of tax	350,283	512,970
Treasury stock, at cost; 568,570 shares at September 30, 2021 and 1,225,066 shares at December 31, 2020	(49,013)	(113,939)
Total shareholders’ equity	4,372,362	4,293,016
Total liabilities and shareholders’ equity	$ 47,860,325	$ 42,391,317