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Organization and Nature of Operations (Details) (USD $) In Millions, unless otherwise specified |  | 12 Months Ended |  |  |  | 10 Months Ended | 26 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2013 Collateralized Debt Obligations [Member] | Dec. 31, 2013 PrinceRidge [Member] | Dec. 31, 2012 PrinceRidge [Member] | Dec. 31, 2011 PrinceRidge [Member] | Dec. 31, 2013 Star Asia Manager [Member] | Feb. 28, 2013 Star Asia Manager [Member] | Dec. 31, 2012 Star Asia Manager [Member]
Securities [Line Items] |  |  |  |  |  |  |  |
Assets under Management | $ 5,700.0 | $ 5,400.0 |  |  |  |  |  |
Assets under management which are collateralized debt obligations percentage |  | 94.00% |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  | 50.00%
Noncontrolling Interest, Ownership Percentage by Parent |  |  | 100.00% | 98.00% | 70.00% |  |  |
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions |  |  |  |  |  | 100.00% | 50.00% |

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