Commitments and Contingencies - Additional Information (Detail)	3 Months Ended
Mar. 31, 2016 USD ($)
Property, Plant and Equipment [Line Items]
Future funding commitments	$ 4,314,000
Additional capital calls funded	$ 125,000,000
FLORIDA
Property, Plant and Equipment [Line Items]
Expiration date	Dec. 31, 2017
Ground lease, rent expense	$ 2.00
New York, NY [Member] \| Ground Lease [Member]
Property, Plant and Equipment [Line Items]
Ground lease commitments, 2016	1,201,000
Ground lease commitments, 2017	1,656,000
Ground lease commitments, 2018	1,791,000
Ground lease commitments, 2019	1,844,000
Ground lease commitments, 2020	1,900,000
Ground lease commitments, Thereafter	$ 103,884,000
Expiration date	Jun. 01, 2053
Chicago, IL [Member] \| Ground Lease [Member]
Property, Plant and Equipment [Line Items]
Ground lease commitments, 2016	$ 440,000
Ground lease commitments, 2017	440,000
Ground lease commitments, 2018	440,000
Ground lease commitments, 2019	440,000
Ground lease commitments, 2020	440,000
Ground lease commitments, Thereafter	$ 6,047,000
Expiration date	Sep. 30, 2034

Additional capital calls funded.

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- Definition

Future funding commitments.

+ References

No definition available.

+ Details

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- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

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- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

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- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

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- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

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- Definition

Amount of required minimum rental payments receivable in the remainder of the fiscal year following the latest fiscal year ended for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

No definition available.

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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- Definition

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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