Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets:
Cash and due from banks	$ 215,244	$ 190,663
Interest-bearing deposits	26,992	29,461
Investment securities available-for-sale, at fair value	2,591,162	2,991,091
Investment securities held-to-maturity (fair value of $4,481,675 and $4,125,125)	4,497,311	4,160,658
Federal Home Loan Bank and Federal Reserve Bank stock	136,340	194,646
Loans held for sale (valued under fair value option $32,855 and $60,260)	32,855	67,577
Loans and leases	17,446,421	17,026,588
Allowance for loan and lease losses	(201,803)	(194,320)
Loans and leases, net	17,244,618	16,832,268
Deferred tax assets, net	82,895	84,391
Premises and equipment, net	130,358	137,413
Goodwill	538,373	538,373
Other intangible assets, net	30,589	33,674
Cash surrender value of life insurance policies	528,136	517,852
Accrued interest receivable and other assets	295,309	294,462
Total assets	26,350,182	26,072,529
Liabilities and shareholders' equity:
Noninterest-bearing Deposit Liabilities	4,138,206	4,021,061
Interest-bearing Deposit Liabilities	16,717,029	15,282,796
Total deposits	20,855,235	19,303,857
Securities sold under agreements to repurchase and other borrowings	902,902	949,526
Federal Home Loan Bank advances	1,507,681	2,842,908
Long-term debt	225,704	225,514
Accrued expenses and other liabilities	219,873	223,712
Total liabilities	23,711,395	23,545,517
Shareholders’ equity:
Preferred stock, $.01 par value; Authorized - 3,000,000 shares: Series E issued and outstanding (5,060 shares)	122,710	122,710
Common stock, $.01 par value: Authorized - 200,000,000 shares: Issued (93,651,601 shares)	937	937
Paid-in capital	1,123,685	1,125,937
Retained earnings	1,535,585	1,425,320
Treasury stock, at cost (1,764,131 and 1,899,502 shares)	(75,032)	(70,899)
Accumulated other comprehensive loss, net of tax	(69,098)	(76,993)
Total shareholders' equity	2,638,787	2,527,012
Total liabilities and shareholders' equity	$ 26,350,182	$ 26,072,529