Discontinued Operations (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Discontinued Operations
Total net revenues	$ 4,484,000	$ 15,582,000
Total expenses	8,792,000	18,396,000
Loss from discontinued operations before income taxes	(4,308,000)	(2,814,000)
Income tax expense/(benefit)		(1,162,000)
Loss from discontinued operations, net of taxes	(4,308,000)	(1,652,000)
Restructuring expense	(2,828,000)
ClearPoint
Discontinued Operations
Loss recognized from discontinued operations	1,100,000
Total net revenues	4,408,000	15,545,000
Total expenses	8,711,000	18,469,000
ClearPoint
Discontinued Operations
Restructuring expense	(2,828,000)
Equities division
Discontinued Operations
Total net revenues	76,000	37,000
Total expenses	$ 81,000	$ (73,000)