Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Cash and due from banks, including interest bearing amounts of $8,425 and $33,889, respectively	$ 78,070	$ 125,605
Securities:
Available-for-sale, at fair value	971,178	1,021,244
Held-to-maturity (fair values of $615,203 and $639,273, respectively)	608,761	602,509
Total securities	1,579,939	1,623,753
Loans held for sale	14,517	21,903
Portfolio loans, net of unearned income	3,801,382	3,687,762
Allowance for loan losses	(50,381)	(52,699)
Net portfolio loans	3,751,001	3,635,063
Premises and equipment, net	91,894	88,866
Accrued interest receivable	19,248	19,354
Goodwill and other intangible assets, net	322,478	324,465
Bank-owned life insurance	119,546	119,671
Other assets	107,318	120,037
Total Assets	6,084,011	6,078,717
Deposits:
Non-interest bearing demand	901,559	874,923
Interest bearing demand	840,263	831,368
Money market	845,294	847,805
Savings deposits	775,248	740,568
Certificates of deposit	1,576,391	1,649,620
Total deposits	4,938,755	4,944,284
Federal Home Loan Bank borrowings	60,344	111,187
Other short-term borrowings	200,538	142,971
Junior subordinated debt owed to unconsolidated subsidiary trusts	106,118	113,832
Total borrowings	367,000	367,990
Accrued interest payable	3,516	3,856
Other liabilities	48,508	48,403
Total Liabilities	5,357,779	5,364,533
SHAREHOLDERS' EQUITY
Preferred stock, no par value; 1,000,000 shares authorized; none outstanding
Common stock, $2.0833 par value; 50,000,000 shares authorized; 29,282,412 and 29,214,660 shares issued in 2013 and 2012; outstanding: 29,282,412 and 29,214,660 shares in 2013 and 2012, respectively	61,005	60,863
Capital surplus	242,640	241,672
Retained earnings	441,168	419,246
Treasury stock (0 shares in 2013 and 2012, respectively, at cost)
Accumulated other comprehensive income (loss)	(17,329)	(6,365)
Deferred benefits for directors	(1,252)	(1,232)
Total Shareholders' Equity	726,232	714,184
Total Liabilities and Shareholders' Equity	$ 6,084,011	$ 6,078,717