Investment in Real Estate - Additional Information (Detail) $ in Thousands, ft² in Millions	6 Months Ended
Jun. 30, 2016 USD ($) ft² Property
Real Estate [Abstract]
Number of industrial properties acquired \| Property	2
Gross leasable area (GLA) of industrial properties acquired \| ft²	0.3
Purchase price of industrial properties acquired	$ 74,755
Number of industrial properties sold \| Property	31
Gross leasable area (GLA) of industrial properties sold \| ft²	2.0
Proceeds from sale of industrial properties	$ 100,485
Gain on sale of real estate	$ 44,026

Number of industrial properties sold.

No definition available.

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- Definition

Square footage of industrial properties sold.

+ References

No definition available.

+ Details

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- Definition

Square Footage of Real Estate Properties Acquired.

+ References

No definition available.

+ Details

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- Definition

Amount of assets acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from sale of buildings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

+ Details

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Balance Type:	debit
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- References

No definition available.

+ Details

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