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Fair Values (Schedule of Fair Value Measurement) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) real_estate_asset land_asset | Dec. 31, 2017 USD ($)
Recurring basis | Fair Value |  |
Assets and liabilities recorded at fair value |  |
Derivative assets | $ 3,669 |
Derivative liabilities | 10,244 |
Available-for-sale securities | 21,661 | $ 22,842
Recurring basis | Level 1 |  |
Assets and liabilities recorded at fair value |  |
Derivative assets | 0 |
Derivative liabilities | 0 |
Available-for-sale securities | 0 | 0
Recurring basis | Level 2 |  |
Assets and liabilities recorded at fair value |  |
Derivative assets | 3,669 |
Derivative liabilities | 10,244 |
Available-for-sale securities | 0 | 0
Recurring basis | Level 3 |  |
Assets and liabilities recorded at fair value |  |
Derivative assets | 0 |
Derivative liabilities | 0 |
Available-for-sale securities | 21,661 | 22,842
Non-recurring basis |  |
Assets and liabilities recorded at fair value |  |
Impaired real estate, aggregate impairment | $ 76,300 |
Impaired real estate, number of assets | real_estate_asset | 3 |
Impaired real estate available and held for sale, aggregate impairment | $ 3,700 |
Impaired real estate available and held for sale, number of assets | real_estate_asset | 2 |
Impaired land and development, aggregate impairment | $ 55,400 |
Impaired land and development, number of assets | land_asset | 4 |
Non-recurring basis | Fair Value |  |
Assets and liabilities recorded at fair value |  |
Impaired real estate | $ 29,400 | 12,400
Impaired real estate available and held for sale | 19,300 | 800
Impaired land and development | 78,400 | 21,400
Non-recurring basis | Level 1 |  |
Assets and liabilities recorded at fair value |  |
Impaired real estate | 0 | 0
Impaired real estate available and held for sale | 0 | 0
Impaired land and development | 0 | 0
Non-recurring basis | Level 2 |  |
Assets and liabilities recorded at fair value |  |
Impaired real estate | 0 | 0
Impaired real estate available and held for sale | 0 | 0
Impaired land and development | 0 | 0
Non-recurring basis | Level 3 |  |
Assets and liabilities recorded at fair value |  |
Impaired real estate |  | 12,400
Impaired real estate available and held for sale | 19,300 | 800
Impaired land and development |  | $ 21,400
Non-recurring basis | Level 3 | Discount Rate |  |
Assets and liabilities recorded at fair value |  |
Land and development asset, measurement input |  | 0.06
Non-recurring basis | Level 3 | Holding Period | Fair Value |  |
Assets and liabilities recorded at fair value |  |
Land and development asset, measurement input term |  | 10 years
Non-recurring basis | Commercial operating property one |  |
Assets and liabilities recorded at fair value |  |
Impaired Other Real Estate Owned, Impairment | 23,200 |
Non-recurring basis | Property to be sold |  |
Assets and liabilities recorded at fair value |  |
Impaired Other Real Estate Owned, Impairment | 6,000 |
Non-recurring basis | Commercial operating property two |  |
Assets and liabilities recorded at fair value |  |
Impaired Other Real Estate Owned, Impairment | 47,100 |
Non-recurring basis | Waterfront land and development asset to be sold |  |
Assets and liabilities recorded at fair value |  |
Impaired Other Real Estate Owned, Impairment | 25,000 |
Non-recurring basis | Master planned community |  |
Assets and liabilities recorded at fair value |  |
Impaired Other Real Estate Owned, Impairment | 21,600 |
Non-recurring basis | Infill land and development asset |  |
Assets and liabilities recorded at fair value |  |
Impaired Other Real Estate Owned, Impairment | 6,900 |
Non-recurring basis | Waterfront land and development asset sold |  |
Assets and liabilities recorded at fair value |  |
Impaired Other Real Estate Owned, Impairment | $ 1,900 |

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