Consolidated Statements of Financial Condition (Parenthetical) (USD $)	Dec. 31, 2011	Jun. 30, 2012 Unaudited
Stockholder's equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	49,000,000	49,000,000
Common stock, issued shares	23,211,846	23,211,846
Common stock, outstanding shares	22,105,499	22,101,197
Treasury Stock Shares	1,106,347	1,110,649