Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

+ References

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Investment, Basis Spread on Variable Rate

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No definition available.

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- Definition

Investments, Carrying Amount Exceeds Fair Value

+ References

No definition available.

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- Definition

Number of Collateralized Loan Obligations Consolidated

+ References

No definition available.

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Consolidation - Additional Information (Details)	6 Months Ended
Consolidation - Additional Information (Details)	Jun. 30, 2017 USD ($) collateralized_loan_obligation	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)
Variable Interest Entity [Line Items]
Fair value, securities, Level 1 to Level 2 transfers, amount	$ 0		$ 0
VOEs
Variable Interest Entity [Line Items]
Investments	$ 31,559,000	$ 99,247,000
CLOs
Variable Interest Entity [Line Items]
Number of CLOs consolidated \| collateralized_loan_obligation	4
Investments	$ 1,263,265,000	346,967,000
Consolidated investment products
Variable Interest Entity [Line Items]
Investments	1,354,389,000	$ 489,042,000
Fair value, securities, Level 2 to Level 1 transfers, amount	0		100,000
Fair value, securities, Level 1 to Level 2 transfers, amount	0		$ 4,100,000
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying value and maximum risk of loss	$ 15,200,000
LIBOR \| CLOs
Variable Interest Entity [Line Items]
Investments, basis spread on variable interest rate	9.50%
LIBOR \| Minimum \| CLOs
Variable Interest Entity [Line Items]
Basis spread on variable interest rate	1.00%
LIBOR \| Maximum \| CLOs
Variable Interest Entity [Line Items]
Basis spread on variable interest rate	8.75%
Senior Notes \| CLOs
Variable Interest Entity [Line Items]
Unpaid principal balance exceeds fair value	$ 1,200,000
Subordinated Notes - Newfleet CLO 2016-1 \| CLOs
Variable Interest Entity [Line Items]
Debt par value	1,111,000,000.000
Subordinated Notes - Newfleet CLO 2016-1 \| Subordinated Debt \| CLOs
Variable Interest Entity [Line Items]
Debt par value	138,500,000.0
Senior Secured Floating Rate Notes - Newfleet CLO 2016-1 \| Senior Notes \| CLOs
Variable Interest Entity [Line Items]
Debt par value	$ 972,500,000.0