Consolidated Statements of Financial Condition (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets
Cash and due from banks	$ 296,557	$ 234,253
Interest bearing deposits with banks	83,045	134,915
Investment securities:
Held to maturity (fair value of $1,816,049 at March 31, 2014 and $1,711,427 at December 31, 2013)	1,813,096	1,731,737
Available for sale	796,583	829,692
Trading securities	14,255	14,264
Total investment securities	2,623,934	2,575,693
Loans held for sale (includes fair value of $5,057 at March 31, 2014 and $10,488 at December 31, 2013 for loans originated for sale)	32,386	10,488
Non-covered loans	11,613,664	11,471,447
Covered loans	80,930	96,165
Less: Allowance for loan losses	(106,709)	(113,617)
Net loans	11,587,885	11,453,995
Premises and equipment, net	270,669	270,138
Bank owned life insurance	345,431	344,023
Accrued interest receivable	54,286	53,964
Due from customers on acceptances outstanding	5,139	5,032
FDIC loss-share receivable	31,257	32,757
Goodwill	428,234	428,234
Other intangible assets, net	34,186	36,130
Other assets	551,455	576,919
Total Assets	16,344,464	16,156,541
Liabilities
Non-interest bearing	3,705,182	3,717,271
Interest bearing:
Savings, NOW and money market	5,450,286	5,422,722
Time	2,112,517	2,179,269
Total deposits	11,267,985	11,319,262
Short-term borrowings	537,110	281,455
Long-term borrowings	2,795,239	2,792,306
Junior subordinated debentures issued to capital trusts	41,130	41,089
Bank acceptances outstanding	5,139	5,032
Accrued expenses and other liabilities	137,972	176,357
Total Liabilities	14,784,575	14,615,501
Shareholders’ Equity
Preferred stock (no par value, authorized 30,000,000 shares; none issued)	0	0
Common stock (no par value, authorized 232,023,233 shares; issued 200,372,281 shares at March 31, 2014 and 199,629,268 shares at December 31, 2013)	70,013	69,941
Surplus	1,405,543	1,403,375
Retained earnings	118,108	106,340
Accumulated other comprehensive loss	(33,664)	(38,252)
Treasury stock, at cost (11,267 common shares at March 31, 2014 and 36,159 common shares at December 31, 2013)	(111)	(364)
Total Shareholders’ Equity	1,559,889	1,541,040
Total Liabilities and Shareholders’ Equity	$ 16,344,464	$ 16,156,541