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Related Party Arrangements (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Related Party Arrangements |  |  |  |  |
Compensation expense |  |  | $ 15,189 | $ 13,245 |
Unconsolidated real estate entities |  |  |  |  |
Related Party Arrangements |  |  |  |  |
Outstanding receivables | $ 2,966 |  | 2,966 |  | $ 2,449
Non Employee Director | Restricted stock and deferred stock awards |  |  |  |  |
Related Party Arrangements |  |  |  |  |
Compensation expense | 454 | $ 368 | 1,200 | $ 1,127 |
Amount of deferred compensation | $ 928 |  | $ 928 |  | $ 525

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