Condensed Consolidated Statements of Financial Condition (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 62,161	$ 72,276
Interest-bearing bank deposits	3,124	2,262
Securities available for sale, at fair value	1,269,285	1,309,819
Securities held to maturity, at amortized cost (Fair value of $30,174 at March 31, 2015)	30,253	0
Other investments	47,076	44,545
Loans held for sale	5,892	2,502
Loans:
Portfolio loans	4,437,601	4,457,308
Allowance for credit losses	(46,697)	(52,051)
Net loans	4,390,904	4,405,257
Premises and equipment, net	64,816	64,989
Other real estate owned	7,025	7,197
Goodwill	161,429	161,429
Amortizing intangibles, net	1,508	1,665
Bank owned life insurance	178,630	177,567
Other assets	109,739	110,777
Total assets	6,331,842	6,360,285
Deposits (all domestic):
Noninterest-bearing	1,039,929	989,027
Interest-bearing	3,253,820	3,326,484
Total deposits	4,293,749	4,315,511
Short-term borrowings	1,125,520	1,105,876
Subordinated debentures	72,167	72,167
Other long-term debt	64,324	89,459
Total long-term debt	136,491	161,626
Other liabilities	63,222	61,127
Total liabilities	5,618,982	5,644,140
Shareholders’ Equity
Preferred stock, $1 par value per share, 3,000,000 shares authorized, none issued	0	0
Common stock, $1 par value per share, 200,000,000 shares authorized; 105,563,455 shares issued at March 31, 2015 and December 31, 2014, and 89,656,007 and 91,723,028 shares outstanding at March 31, 2015 and December 31, 2014, respectively	105,563	105,563
Additional paid-in capital	365,874	365,615
Retained earnings	360,841	353,027
Accumulated other comprehensive income (loss), net	2,702	(4,499)
Treasury stock (15,907,448 and 13,840,427 shares at March 31, 2015 and December 31, 2014, respectively)	(122,120)	(103,561)
Total shareholders’ equity	712,860	716,145
Total liabilities and shareholders’ equity	$ 6,331,842	$ 6,360,285