Variable Interest Entities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Variable Interest Entity [Line Items]
Total VIE Assets	$ 2,021,915	[1]	$ 2,346,619	[1]
Carrying Value of Variable Interest Assets	1,611	[2]	767	[2]
Capital Commitments	2		5
Maximum Exposure to Loss in Non- consolidated VIEs	1,613		772
Hedge Funds
Variable Interest Entity [Line Items]
Total VIE Assets	1,955,515	[1]	2,282,144	[1]
Carrying Value of Variable Interest Assets	1,584	[2]	738	[2]
Carrying Value of Variable Interest Liabilities	0		0
Capital Commitments	0		0
Maximum Exposure to Loss in Non- consolidated VIEs	1,584		738
Private Equity Funds
Variable Interest Entity [Line Items]
Total VIE Assets	66,400	[1]	64,475	[1]
Carrying Value of Variable Interest Assets	27	[2]	29	[2]
Carrying Value of Variable Interest Liabilities	0		0
Capital Commitments	2		5
Maximum Exposure to Loss in Non- consolidated VIEs	$ 29		$ 34

[1] Represents the total assets of the VIEs and does not represent the Company’s interests in the VIEs.

[2] Represents the Company’s interests in the VIEs and is included in other assets on the consolidated balance sheet.