Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) properties	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Property, Plant and Equipment, Useful Life	40 years
Variable Interest Entity Number Of Entities Not Primary Beneficiary \| properties	7
Lessor, Operating Lease, Renewal Term	5 years
Financing Receivable, Allowance for Credit Loss	$ 4,946	$ 0
Operating Leases, Income Statement, Lease Revenue	$ 307,208	294,182	$ 280,813
Number of partnerships consoldidated \| properties	2
Escrow Funds Received From Tenants [Member]
Operating Leases, Income Statement, Lease Revenue	$ 9,653	$ 5,798	$ 0
Minimum [Member]
Lessor, Operating Lease, Term of Contract	10 years
Maximum [Member]
Lessor, Operating Lease, Term of Contract	15 years
Building [Member]
Property, Plant and Equipment, Useful Life	40 years
Building Improvements [Member]
Property, Plant and Equipment, Useful Life	25 years

Number of partnerships consoldidated

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- Definition

Number of Variable Interest Entities (VIE) or potential VIEs for which it is determined that the reporting entity is not the primary beneficiary.

+ References

No definition available.

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

+ References

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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