Commitments and Contingencies - Property Damage from Natural Disaster (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Net recoveries	$ 3,861	$ 689
Insurance recoveries, net	4,362	689	$ 0
Jacksonville Mall, Jacksonville, North Carolina
Loss Contingencies [Line Items]
Net recoveries	4,400	700
Business interruption recoveries	$ 500
Loss Contingency, Estimate of Possible Loss		2,300
Insurance recoveries, net		$ 3,000

The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire.

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The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

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Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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