Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 516,219	$ 529,454
Interest-bearing deposits	14,659,173	9,758,624
Federal funds sold	1,100	775
Resell agreements	7,903	0
Total cash and cash equivalents	15,184,395	10,288,853
Securities held to maturity, net of allowance for credit losses of $158 at June 30, 2021 and $160 at December 31, 2020	1,813,405	1,945,673
Securities available-for-sale, at estimated fair value	10,840,526	10,437,565
Trading account securities	24,137	24,456
Loans, net of unearned discounts	16,596,326	17,481,309
Less: Allowance for credit losses on loans	(255,288)	(263,177)
Net loans	16,341,038	17,218,132
Premises and equipment, net	1,031,853	1,045,578
Goodwill	654,952	654,952
Other intangible assets, net	1,176	1,563
Cash surrender value of life insurance policies	189,818	189,984
Accrued interest receivable and other assets	616,373	584,561
Total assets	46,697,673	42,391,317
Liabilities:
Non-interest-bearing demand deposits	16,459,535	15,117,051
Interest-bearing deposits	22,274,605	19,898,710
Total deposits	38,734,140	35,015,761
Federal funds purchased	26,700	48,850
Repurchase agreements	2,216,889	2,068,147
Junior subordinated deferrable interest debentures, net of unamortized issuance costs	136,385	136,357
Subordinated notes, net of unamortized issuance costs	99,100	99,021
Accrued interest payable and other liabilities	1,110,642	730,165
Total liabilities	42,323,856	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 June 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 June 30, 2021 and December 31, 2020	642	642
Additional paid-in capital	1,002,939	997,168
Retained earnings	2,862,966	2,750,723
Accumulated other comprehensive income (loss), net of tax	412,990	512,970
Treasury stock, at cost; 590,060 shares at June 30, 2021 and 1,225,066 shares at December 31, 2020	(51,172)	(113,939)
Total shareholders’ equity	4,373,817	4,293,016
Total liabilities and shareholders’ equity	$ 46,697,673	$ 42,391,317