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Commitments and Contingencies (Details) $ in Thousands | Sep. 30, 2019 USD ($) property | Dec. 31, 2018 USD ($)
--- | --- | ---
Environmental Indemnity Agreement |  |
Number of properties which were provided environmental indemnifications | property | 3 |
Maximum additional costs agreed to be paid by the entity under environmental indemnification agreement | $ 19,000 |
Carrying Value | 1,862,301 | $ 1,823,909
Development and Redevelopment Obligations |  |
Environmental Indemnity Agreement |  |
Purchase obligations | 217,100 |
Tenant and Other Capital Improvements |  |
Environmental Indemnity Agreement |  |
Purchase obligations | 60,800 |
Third Party Construction |  |
Environmental Indemnity Agreement |  |
Purchase obligations | 13,500 |
Other Obligations |  |
Environmental Indemnity Agreement |  |
Purchase obligations | 1,600 |
Specialty Tax Guarantee | Anne Arundel County, Maryland | Tax Incremental Financing Bond |  |
Environmental Indemnity Agreement |  |
Carrying Value | $ 34,000 |

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