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Related Party Transactions - Schedule of fees charged to unconsolidated joint ventures (Details) - Unconsolidated joint ventures and third party managed properties - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Related Party Transaction [Line Items] |  |  |
Management fees | $ 19,105 | $ 17,937 | $ 10,064
Development and leasing fees | 15,558 | 13,907 | 9,615
Fees charged to unconsolidated joint ventures | $ 34,663 | $ 31,844 | $ 19,679

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- Definition Revenue, comprised of fees related to the development and leasing of joint venture properties and third-party managed properties. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Revenue, comprised of base and incentive revenue, from developing, operating and managing another entity's business during the reporting period. + References No definition available. + Details
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- Definition Revenue, comprised of base and incentive revenue derived from the management of joint ventures, managing third-party properties, or another entity's operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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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. + Details
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- Details
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