Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Allowance for accounts receivable	$ 77	$ 427
Liabilities
Series B Preferred Stock, par value	$ 0.001	$ 0.001
Series B Preferred Stock, shares authorized	35,000	35,000
Series B Preferred Stock, shares issued	0	35,000
Series B Preferred Stock, shares outstanding	0	35,000
Stockholders' equity
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	4,855,000	4,855,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury stock, shares	1,303,741	4,803,740
Series A Preferred Stock
Stockholders' equity
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	110,000	110,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock voting
Stockholders' equity
Common stock, par value	$ 0.003	$ 0.003
Common stock, shares authorized	110,000,000	110,000,000
Common stock, shares issued	36,728,696	35,945,001
Common stock, shares outstanding	35,424,955	31,141,261
Common stock non-voting
Stockholders' equity
Common stock, par value	$ 0.003	$ 0.003
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	2,585,654	2,585,654
Common stock, shares outstanding	2,585,654	2,585,654