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Summary of Significant Accounting Policies - Debt Issuance Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Amortization of deferred financing fees
Amortization expense in 2022	$ 9,974
Amortization expense in 2023	5,832
Amortization expense in 2024	5,521
Amortization expense in 2025	3,556
Amortization expense in 2026	1,956
Amortization expense thereafter	15,494
Unsecured Term Loans, Senior Notes, and Mortgage Notes Payable
Debt Instrument
Deb issuance costs, gross	53,649	$ 53,496
Accumulated amortization, debt issuance costs gross	15,800	15,589
Revolving Credit Facility
Debt Instrument
Deb issuance costs, gross	27,383	19,332
Accumulated amortization, debt issuance costs gross	$ 22,899	$ 16,201

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Represents the amount of amortization of deferred financing fees expected to be recognized after the fifth succeeding fiscal year.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year five of the five succeeding fiscal years.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year four of the five succeeding fiscal years.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year one of the five succeeding fiscal years.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year three of the five succeeding fiscal years.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year two of the five succeeding fiscal years.

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Amount of accumulated amortization of debt issuance costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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