Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and due from banks	$ 157,539	$ 128,627
Interest-bearing deposits with other banks	273,517	506,367
Federal funds sold	1,021	1,009
Total cash and cash equivalents	432,077	636,003
Securities available for sale at estimated fair value (amortized cost-$673,315 at December 31, 2012 and $752,085 at December 31, 2011)	625,625	696,518
Securities held to maturity (estimated fair value-$42,695 at December 31, 2012 and $56,181 at December 31, 2011)	43,467	59,289
Other investment securities	60,310	68,412
Loans held for sale	17,762	3,902
Loans	6,517,780	6,234,280
Less: Unearned income	(6,364)	(3,503)
Loans net of unearned income	6,511,416	6,230,777
Less: Allowance for loan losses	(73,901)	(73,874)
Net loans	6,437,515	6,156,903
Bank premises and equipment	72,170	76,442
Goodwill	375,583	375,626
Accrued interest receivable	26,302	26,461
Other assets	329,202	351,914
TOTAL ASSETS	8,420,013	8,451,470
Deposits:
Noninterest-bearing	1,824,411	1,619,162
Interest-bearing	4,928,575	5,199,848
Total deposits	6,752,986	6,819,010
Borrowings:
Federal funds purchased	5,446	7,120
Securities sold under agreements to repurchase	209,516	247,646
Federal Home Loan Bank borrowings	186,411	141,809
Other long-term borrowings	198,515	203,557
Allowance for lending-related commitments	1,656	1,853
Accrued expenses and other liabilities	73,232	61,631
TOTAL LIABILITIES	7,427,762	7,482,626
Shareholders' Equity
Preferred stock, $1.00 par value; Authorized-50,000,000 shares; none issued	0	0
Common stock, $2.50 par value; Authorized-100,000,000 shares; issued- 50,867,630 at December 31, 2012 and 2011, including 591,057 and 654,682 shares in treasury at December 31, 2012 and 2011, respectively	127,169	127,169
Surplus	238,739	238,761
Retained earnings	712,299	692,043
Accumulated other comprehensive loss	(65,748)	(66,758)
Treasury stock, at cost	(20,208)	(22,371)
TOTAL SHAREHOLDERS' EQUITY	992,251	968,844
TOTAL LIABILITIES AND SHAREHOLDERS EQUITY	$ 8,420,013	$ 8,451,470