Acquisitions and Dispositions Acquisitions (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) entities buildings	Mar. 31, 2020 USD ($)
Property, Plant and Equipment [Line Items]
Payments to Acquire Commercial Real Estate	$ 34,738	$ 0
Real estate assets	31,754
Lease related intangibles	3,078
Total acquired assets	$ 34,832
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years 1 month 6 days
Gain (Loss) on Sale of Properties	$ 22,598	$ 9,120
Non-cash distribution of properties from Unconsolidated Joint Ventues
Property, Plant and Equipment [Line Items]
Number of Real Estate Properties \| buildings	2
Number of Unconsolidated Joint Ventures in which Equity Interests Held \| entities	2
Equity Method Investment, Ownership Percentage	50.00%
Gain (Loss) on Sale of Properties	$ 10,600
Assets Received from Distribution	52,100
Repayments of Assumed Debt	$ 40,200

Assets Received from Distribution

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Number of Unconsolidated Joint Ventures in which Equity Interests Held

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of assets acquired at the acquisition date.

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Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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The number of real estate properties owned as of the balance sheet date.

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The cash outflow from the acquisition of property as primarily intended to generate income for its owner.

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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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The cash outflow from the repayments of a long-term debt originally issued by another party but is assumed by the entity.

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