Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 243,310	$ 220,791
Interest bearing deposits with banks	172,800	171,710
Investment securities:
Held to maturity (fair value of $1,837,620 at December 31, 2017 and $1,924,597 at December 31, 2016)	1,842,691	1,925,572
Available for sale	1,493,905	1,297,373
Total investment securities	3,336,596	3,222,945
Loans held for sale, at fair value	15,119	57,708
Loans	18,331,580	17,236,103
Less: Allowance for loan losses	(120,856)	(114,419)
Net loans	18,210,724	17,121,684
Premises and equipment, net	287,705	291,180
Bank owned life insurance	386,079	391,830
Accrued interest receivable	73,990	66,816
Goodwill	690,637	690,637
Other intangible assets, net	42,507	45,484
Other assets	542,839	583,654
Total Assets	24,002,306	22,864,439
Deposits:
Non-interest bearing	5,224,928	5,252,825
Interest bearing:
Savings, NOW and money market	9,365,013	9,339,012
Time	3,563,521	3,138,871
Total deposits	18,153,462	17,730,708
Short-term borrowings	748,628	1,080,960
Long-term borrowings	2,315,819	1,433,906
Junior subordinated debentures issued to capital trusts	41,774	41,577
Accrued expenses and other liabilities	209,458	200,132
Total Liabilities	21,469,141	20,487,283
Common stock (no par value, authorized 450,000,000 shares; issued 264,498,643 shares at December 31, 2017 and 263,804,877 shares at December 31, 2016)	92,727	92,353
Surplus	2,060,356	2,044,401
Retained earnings	216,733	172,754
Accumulated other comprehensive loss	(46,005)	(42,093)
Treasury stock, at cost (29,792 common shares at December 31, 2017 and 166,047 common shares at December 31, 2016)	(337)	(1,849)
Total Shareholders’ Equity	2,533,165	2,377,156
Total Liabilities and Shareholders’ Equity	24,002,306	22,864,439
Series A Preferred Stock
Preferred stock, no par value; 50,000,000 shares authorized	111,590	111,590
Series B Preferred Stock
Preferred stock, no par value; 50,000,000 shares authorized	$ 98,101	$ 0