CONDENSED CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Investments held-to-maturity, fair value	$ 193,432	$ 104,124
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	24,079,204	24,046,627
Common stock, shares outstanding	24,079,204	24,046,627