Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 536,604	$ 529,454
Interest-bearing deposits	11,257,662	9,758,624
Federal funds sold	100	775
Resell agreements	7,903	0
Total cash and cash equivalents	11,802,269	10,288,853
Securities held to maturity, net of allowance for credit losses of $158 at March 31, 2021 and $160 at December 31, 2020	1,820,567	1,945,673
Securities available-for-sale, at estimated fair value	10,377,444	10,437,565
Trading account securities	26,609	24,456
Loans, net of unearned discounts	17,889,651	17,481,309
Less: Allowance for credit losses on loans	(261,258)	(263,177)
Net loans	17,628,393	17,218,132
Premises and equipment, net	1,040,572	1,045,578
Goodwill	654,952	654,952
Other intangible assets, net	1,361	1,563
Cash surrender value of life insurance policies	189,756	189,984
Accrued interest receivable and other assets	504,864	584,561
Total assets	44,046,787	42,391,317
Liabilities:
Non-interest-bearing demand deposits	16,103,649	15,117,051
Interest-bearing deposits	20,821,531	19,898,710
Total deposits	36,925,180	35,015,761
Federal funds purchased	38,975	48,850
Repurchase agreements	1,884,449	2,068,147
Junior subordinated deferrable interest debentures, net of unamortized issuance costs	136,371	136,357
Subordinated notes, net of unamortized issuance costs	99,061	99,021
Accrued interest payable and other liabilities	694,833	730,165
Total liabilities	39,778,869	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 March 31, 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 March 31, 2021 and December 31, 2020	642	642
Additional paid-in capital	999,694	997,168
Retained earnings	2,797,064	2,750,723
Accumulated other comprehensive income (loss), net of tax	387,748	512,970
Treasury stock, at cost; 704,312 shares at March 31, 2021 and 1,225,066 shares at December 31, 2020	(62,682)	(113,939)
Total shareholders’ equity	4,267,918	4,293,016
Total liabilities and shareholders’ equity	$ 44,046,787	$ 42,391,317