Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Jun. 30, 2013 Exit of Investment Banking and Fixed Income Businesses employee	Mar. 31, 2014 ClearPoint	Mar. 31, 2013 ClearPoint	Mar. 31, 2013 ClearPoint Severance and other compensation	Mar. 31, 2013 ClearPoint Third party vendor contracts and other costs	Mar. 31, 2013 ClearPoint Deferred compensation and other charges	Mar. 31, 2013 ClearPoint Impairment of fixed assets and leasehold improvements
Restructurings
Number of employees impacted		150
Restructuring charges
Cash charges				$ 1,424	$ 1,263	$ 161
Intangible asset impairment								587
Non-cash charges				1,035			448
Restructuring expenses - Total:	$ 2,459		$ 0	$ 2,459