Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Discontinued Operations
(Loss)/income from discontinued operations, net of taxes	$ (23,000)	$ (11,672,000)	$ 9,000	$ (13,066,000)
Equities division
Discontinued Operations
Net revenues	6,000	4,929,000	43,000	10,200,000
Total expenses	(31,000)	19,675,000	(104,000)	27,408,000
Income/(loss) from discontinued operations before income taxes	37,000	(14,746,000)	147,000	(17,208,000)
Income tax expense/(benefit)	60,000	(3,074,000)	138,000	(4,142,000)
(Loss)/income from discontinued operations, net of taxes	(23,000)	(11,672,000)	9,000	(13,066,000)
Goodwill and intangible impairment charge		$ 14,300,000		$ 14,300,000