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Fair Values - Schedule of Fair Value Measurement (Details) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) land_asset
Assets and liabilities recorded at fair value |  |  |
Derivative liabilities | $ 21,900 |  | $ 8,700
Impairment of real estate | 3,000 | $ 3,300 |
Mandarin Asset |  |  |
Assets and liabilities recorded at fair value |  |  |
Impairment of real estate | 3,000 |  |
Land and Development Asset |  |  |
Assets and liabilities recorded at fair value |  |  |
Impairment of real estate | 1,500 |  |
Recurring Basis | Fair Value |  |  |
Assets and liabilities recorded at fair value |  |  |
Derivative assets |  |  | 114
Derivative liabilities | 21,852 |  | 8,680
Available-for-sale securities | 24,611 |  | 23,896
Recurring Basis | Quoted market prices in active markets (Level 1) |  |  |
Assets and liabilities recorded at fair value |  |  |
Derivative assets |  |  | 0
Derivative liabilities | 0 |  | 0
Available-for-sale securities | 0 |  | 0
Recurring Basis | Significant other observable inputs (Level 2) |  |  |
Assets and liabilities recorded at fair value |  |  |
Derivative assets |  |  | 114
Derivative liabilities | 21,852 |  | 8,680
Available-for-sale securities | 0 |  | 0
Recurring Basis | Significant unobservable inputs (Level 3) |  |  |
Assets and liabilities recorded at fair value |  |  |
Derivative assets |  |  | 0
Derivative liabilities | 0 |  | 0
Available-for-sale securities | 24,611 |  | 23,896
Non-recurring Basis |  |  |
Assets and liabilities recorded at fair value |  |  |
Aggregate impairments |  |  | $ 5,300
Number of land and development assets impaired | land_asset |  |  | 2
Non-recurring Basis | Fair Value |  |  |
Assets and liabilities recorded at fair value |  |  |
Impaired real estate | 4,642 |  |
Impaired land and development | 6,628 |  | $ 40,000
Non-recurring Basis | Quoted market prices in active markets (Level 1) |  |  |
Assets and liabilities recorded at fair value |  |  |
Impaired real estate | 0 |  |
Impaired land and development | 0 |  | 0
Non-recurring Basis | Significant other observable inputs (Level 2) |  |  |
Assets and liabilities recorded at fair value |  |  |
Impaired real estate | 0 |  |
Impaired land and development | 0 |  | 0
Non-recurring Basis | Significant unobservable inputs (Level 3) |  |  |
Assets and liabilities recorded at fair value |  |  |
Impaired real estate | 4,642 |  |
Impaired land and development | $ 6,628 |  | $ 40,000

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