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Commitments and Contingencies (Details) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 12, 2017 USD ($) | Jun. 30, 2017 USD ($) lease | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) lease | Jun. 30, 2016 USD ($) | Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of properties subject to ground leases | lease |  | 1 |  | 1 |  |
Ground lease expense |  | $ 0 | $ 107,000 | $ 67,000 | $ 176,000 |
Office space, rent expense |  | 316,000 | $ 318,000 | 671,000 | $ 693,000 |
Compensatory Damages [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Damages awarded in jury verdict | $ 6,000,000 |  |  |  |  |
Punitive Damages [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Damages awarded in jury verdict | 6,000,000 |  |  |  |  |
Legacy Corner Apartments Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency accrual |  | 3,000,000 |  | 3,000,000 |  | $ 0
Potential loss contingency exposure | $ 6,000,000 |  |  |  |  |
Litigation settlement paid by insurance carrier |  | 1,000,000 |  | 1,000,000 |  |
Other Liabilities [Member] | Legacy Corner Apartments Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency accrual |  | 8,000,000 |  | 8,000,000 |  |
Deferred Costs and Other Assets [Member] | Legacy Corner Apartments Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Insurance receivable |  | $ 5,000,000 |  | $ 5,000,000 |  |

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