Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Fair value of investment securities	$ 30,212	$ 32
Accumulated amortization and fair value adjustments on other intangibles	$ 11,219	$ 9,495
SHAREHOLDERS' EQUITY
Common stock, par value	$ 5	$ 5
Common stock, shares authorized	48,000,000	48,000,000
Common stock, shares issued	18,266,404	18,266,404
Common stock, shares outstanding	16,727,099	16,648,303
Treasury stock, shares	1,539,305	1,618,101