Consolidated Statements Of Financial Condition (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Consolidated Statements Of Financial Condition [Abstract]
Accumulated amortization	$ 3,662,477	$ 3,087,940	$ 2,891,981
Common stock, no par value
Common stock, shares authorized	20,000,000	20,000,000	20,000,000
Common stock, shares issued	17,273,776	17,273,776	17,273,776
Common stock, shares outstanding	16,359,017	16,409,317	16,425,809