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Related Party Transactions - Summary of Fees to Vornado (Detail) - Vornado - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Related Party Transaction [Line Items] |  |  |  |
Fees to related party | $ 1,742 | $ 1,709 | $ 5,116 | $ 5,097
Company management fees |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Fees to related party | 700 | 700 | 2,100 | 2,100
Development fees |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Fees to related party | 17 | 0 | 26 | 32
Leasing fees |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Fees to related party | 13 | 3 | 13 | 18
Property management, cleaning, engineering and security fees |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Fees to related party | $ 1,012 | $ 1,006 | $ 2,977 | $ 2,947

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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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