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Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Liability for real estate additions due to Vornado | $ 36 | $ 124
Development fees | Vornado |  |
Liability for real estate additions due to Vornado | $ 26 | $ 24

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