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Related Party Arrangements (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Related Party Arrangements |  |  |  |  |
Compensation expense |  |  | $ 9,843 | $ 8,950 |
Unconsolidated real estate entities |  |  |  |  |
Related Party Arrangements |  |  |  |  |
Outstanding receivables | $ 2,374 |  | 2,374 |  | $ 2,449
Non Employee Director | Restricted stock and deferred stock awards |  |  |  |  |
Related Party Arrangements |  |  |  |  |
Compensation expense | 357 | $ 388 | 746 | $ 759 |
Amount of deferred compensation | $ 1,284 |  | $ 1,284 |  | $ 525

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