Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 137,385	$ 193,501
Interest-bearing deposits	324,185	69,603
Investment securities available-for-sale, at fair value	4,234,854	3,326,776
Investment securities held-to-maturity, net of allowance for credit losses of $214 and $299	6,198,125	5,567,889
Federal Home Loan Bank and Federal Reserve Bank stock	71,836	77,594
Loans held for sale (valued under fair value option $4,694 and $14,000)	4,694	14,012
Loans and leases	22,271,729	21,641,215
Allowance for credit losses on loan and leases	(301,187)	(359,431)
Loans and leases, net	21,970,542	21,281,784
Deferred tax assets, net	109,405	81,286
Property and equipment, net	204,557	226,743
Goodwill	538,373	538,373
Other intangible assets, net	17,869	22,383
Cash surrender value of life insurance policies	572,305	564,195
Accrued interest receivable and other assets	531,469	626,551
Total assets	34,915,599	32,590,690
Liabilities and shareholders' equity:
Non-interest-bearing	7,060,488	6,155,592
Interest-bearing	22,786,541	21,179,844
Total deposits	29,847,029	27,335,436
Securities sold under agreements to repurchase and other borrowings	674,896	995,355
Federal Home Loan Bank advances	10,997	133,164
Long-term debt	562,931	567,663
Operating Lease, Liability	144,804	158,280
Accrued expenses and other liabilities	236,617	166,167
Total liabilities	31,477,274	29,356,065
Shareholders’ equity:
Common stock	937	937
Paid-in capital	1,108,594	1,109,532
Retained earnings	2,333,288	2,077,522
Treasury stock, at cost (3,102,690 and 3,487,389 shares)	(126,951)	(140,659)
Accumulated other comprehensive (loss) income, net of tax	(22,580)	42,256
Total shareholders' equity	3,438,325	3,234,625
Total liabilities and shareholders' equity	34,915,599	32,590,690
Series F Preferred Stock [Member]
Shareholders’ equity:
Preferred stock	$ 145,037	$ 145,037