Consolidated Statements Of Financial Condition (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Consolidated Statements Of Financial Condition [Abstract]
Accumulated amortization	$ 3,276,645	$ 3,087,940	$ 2,500,066
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	16,390,417	16,409,317	16,443,809