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Variable Interest Entities - Summarizes of Closed CLO Offerings with Assets (Details) - Collateralized Loan Obligation Funds - USD ($) $ in Thousands | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2016 | Jun. 09, 2015 | Aug. 04, 2014 | May 01, 2014 | Dec. 17, 2012
Trinitas I |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Offering Amount |  |  |  | $ 400,000 |
Offering Date | May 01, 2014 |  |  |  |
Trinitas II |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Offering Amount |  |  | $ 416,000 |  |
Offering Date | Aug. 04, 2014 |  |  |  |
Doral III |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Offering Amount |  |  |  |  | $ 310,800
Offering Date | Dec. 17, 2012 |  |  |  |
Trinitas III |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Offering Amount |  | $ 409,375 |  |  |
Offering Date | Jun. 09, 2015 |  |  |  |

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