Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Variable Interest Entities - Summary of Closed Collateralized Loan Obligation ("CLO") Funds (Details) - Collateralized Loan Obligation Funds - USD ($) $ in Thousands	Jun. 20, 2017	Sep. 22, 2016	Jun. 02, 2016
Trinitas IV
Variable Interest Entity [Line Items]
Offering Amount			$ 406,650
Trinitas V
Variable Interest Entity [Line Items]
Offering Amount		$ 409,000
Trinitas VI
Variable Interest Entity [Line Items]
Offering Amount	$ 717,100