Investment in Unconsolidated Joint Ventures (Courvoisier Centre JV, LLC (Details) - Courvoisier Centre JV, LLC ft² in Thousands, $ in Millions	Dec. 31, 2016 USD ($) ft²
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage	20.00%
Square footage of real estate property (square feet) \| ft²	343
Outstanding balance of mortgage loan	$ 106.5
Cash balance of joint venture	$ 1.7
Secured Mortgage Note Payable
Schedule of Equity Method Investments [Line Items]
Interest rate on mortgage loan (percent)	4.60%
Spanish Key LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage	80.00%

Equity method investments summarized financial information cash.

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Area of a real estate property.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 323
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-Section 50
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The carrying amount of the outstanding balance due under the mortgage loan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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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.

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