Investments in Real Estate - Summary of Acquired Wholly Owned Industrial Properties (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2017 USD ($) ft² building
Business Acquisition [Line Items]
Capitalized acquisition costs	$ 100
28903 Avenue Paine
Business Acquisition [Line Items]
Rentable Square Feet \| ft²	111,346
Number of Buildings \| building	1
Purchase Price	$ 17,060

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7)(ii))
-URI http://asc.fasb.org/extlink&oid=50486907&loc=d3e511914-122862

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(3)(ii)(A))
-URI http://asc.fasb.org/extlink&oid=50486907&loc=d3e511914-122862

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration