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Real Estate - Intangibles (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of in-place lease valuation
In-place lease valuation (above market)	$ 54,545	$ 43,576
In-place lease valuation (above market) - accumulated amortization	(36,963)	(35,604)
In-place lease valuation (above market), net	17,582	7,972
Ground leasehold interest (below market)	2,254	2,254
Ground leasehold interest (below market) - accumulated amortization	(198)	(191)
Ground leasehold interest (below market), net	2,056	2,063
Intangibles - other	32,028	4,240
Intangibles - other - accumulated amortization	(4,367)	(4,240)
Intangible assets, net	47,299	10,035
In-place lease valuation (below market)	(77,862)	(68,334)
Land leasehold interest (above market)	(3,072)	(3,072)
Intangibles - other (above market)	(387)	0
In-place lease valuation & land leasehold interest - accumulated amortization	45,372	44,073
Intangible liabilities, net	(35,949)	(27,333)
Tenant origination and absorption cost	888,291	740,489
Tenant origination and absorption cost - accumulated amortization	(423,868)	(412,462)
Tenant origination and absorption cost, net	$ 464,423	$ 328,027

X

- Definition

Deferred Costs, Leasing, Gross, Including Related to Real Estate Held for Sale

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In-place lease valuation above market.

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In place lease valuation above market accumulated amortization.

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- Definition

In place lease valuation above market net.

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In place lease valuation below market.

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In place lease valuation below market accumulated amortization.

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In place lease valuation below market net.

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- Definition

Land Leasehold Interest Above Market

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Other Intangible Assets, Above Market

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Schedule of in-place lease valuation.

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For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income.

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This element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This element is net of accumulated amortization.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Accumulated amortization on long-term land leases capitalized as part of real property.

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Gross long-term land leases capitalized as part of real property.

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Net long-term land leases which are capitalized as part of real property.

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Amount before accumulated amortization of finite-lived intangible assets classified as other.

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