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Share and Unit-based Plans - Compensation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Share and unit-based plans |  |  |
Compensation cost under share and unit-based plans | $ 16,723 | $ 33,551 | $ 37,005
Capitalized share and unit-based compensation costs | 4,691 | 6,184 | 6,206
Stock units |  |  |
Share and unit-based plans |  |  |
Compensation cost under share and unit-based plans | 4,598 | 6,355 | 6,045
Unrecognized compensation cost of share and unit-based plans | 2,949 |  |
LTIP units |  |  |
Share and unit-based plans |  |  |
Compensation cost under share and unit-based plans | 11,372 | 26,311 | 30,161
Unrecognized compensation cost of share and unit-based plans | 1,647 |  |
Stock options |  |  |
Share and unit-based plans |  |  |
Compensation cost under share and unit-based plans | 51 | 125 | 85
Unrecognized compensation cost of share and unit-based plans | 0 |  |
Phantom stock units |  |  |
Share and unit-based plans |  |  |
Compensation cost under share and unit-based plans | 702 | 760 | 714
Stock awards and units |  |  |
Share and unit-based plans |  |  |
Fair value of equity-based awards vested during period | $ 3,577 | $ 6,479 | $ 5,257

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