Real Estate Fund Investments - Additional Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
Investment Holdings [Line Items]
Alternative Investment Fund, Interest Rate	4.10%
Alternative Investment Fund [Member]
Investment Holdings [Line Items]
Aggregate committed capital, fair value amount	$ 362,282
Committed capital invested	$ 4,673
Alternative Investment Fund, Paramount Ownership	1.30%
Alternative Investment Fund [Member] \| Minimum
Investment Holdings [Line Items]
Alternative Investment Fund, Interest Rate	6.65%
Alternative Investment Fund, Initial Maturity	Jan. 31, 2019
Alternative Investment Fund [Member] \| Maximum
Investment Holdings [Line Items]
Alternative Investment Fund, Interest Rate	9.61%
Alternative Investment Fund, Initial Maturity	Nov. 30, 2026

Capital commitment amount at fair value.

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Capital commitment invested.

+ References

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Mezzanine loan ownership percentage.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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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

No definition available.

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