Derivative maturity year.

No definition available.

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Mortgage Loans Payable and Unsecured Credit Facilities (Summary of Derivative Financial Instruments Held) (Details) - Interest Rate Swap [Member]	12 Months Ended
	Dec. 31, 2020 USD ($) contract	Dec. 31, 2019 USD ($) contract
Cash Flow Hedging, Count 7 [Member]
Derivatives Fair Value [Line Items]
Count \| contract	7
Fair value \| $	$ 18,927,000
Cash Flow Hedging, Count 7 [Member] \| Minimum [Member]
Derivatives Fair Value [Line Items]
Maturity dates	2021
Cash Flow Hedging, Count 7 [Member] \| Maximum [Member]
Derivatives Fair Value [Line Items]
Maturity dates	2025
Cash Flow Hedging, Count 2 [Member]
Derivatives Fair Value [Line Items]
Count \| contract		2
Fair value \| $		$ 136,000
Cash Flow Hedging, Count 2 [Member] \| Minimum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2020
Cash Flow Hedging, Count 2 [Member] \| Maximum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2023
Cash Flow Hedging, Count 6 [Member]
Derivatives Fair Value [Line Items]
Count \| contract		6
Fair value \| $		$ 7,180,000
Cash Flow Hedging, Count 6 [Member] \| Minimum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2021
Cash Flow Hedging, Count 6 [Member] \| Maximum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2025