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Rental Property - Acquisitions - Allocation of Consideration (Details) - USD ($) $ in Thousands		6 Months Ended
	Feb. 25, 2021	Jun. 30, 2021	Jun. 30, 2020
Allocation of the consideration paid for the acquired assets and liabilities
Land		$ 21,844
Buildings		165,549
Tenant improvements		1,575
Building and land improvements		9,435
Total purchase price		226,949
Less: Mortgage notes assumed		(5,103)
Net assets acquired		$ 221,846
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt, Fair Value Adjustment, Weighted Average Useful Life		18 years 9 months 18 days
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt, Fair Value Adjustment		$ 161
Assumption of mortgage notes		5,103	$ 0
Ronkonkoma, NY, 2-25-21
Allocation of the consideration paid for the acquired assets and liabilities
Assumption of mortgage notes	$ 5,100
In-place leases
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ (20,206)
Weighted average amortization period of lease intangibles		8 years 6 months
Tenant relationships
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ (9,761)
Weighted average amortization period of lease intangibles		11 years 4 months 24 days
Above market leases
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ (2,279)
Weighted average amortization period of lease intangibles		13 years 9 months 18 days
Below market leases
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ 3,861
Weighted average amortization period of lease intangibles		6 years 4 months 24 days

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Amount of acquisition cost of a business combination allocated to building and land improvements included in real estate.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the liabilities assumed. Excludes mortgage debt assumed in acquisition.

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Leasehold Improvements

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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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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of real estate acquired, at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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