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Leases Narrative (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 21, 2020 | Dec. 31, 2020
Lessor, Lease, Description [Line Items] |  |
Write-off for accounts receivable |  | $ 22,600
Write-off for accrued rent |  | $ 67,700
Lessee, Lease, Description [Line Items] |  |
Lessee, Operating Lease, Description |  | The Company has four non-cancelable ground lease obligations, as lessee, which were classified as operating leases, with various initial term expiration dates through 2114.
Hotel Ground Lease |  |
Lessor, Lease, Description [Line Items] |  |
Lessor, Operating Lease, Option to Terminate | On July 29, 2020, the Company entered into a 99-year ground lease with a third-party hotel developer for land at its Reston Next property located in Reston Virginia, which will support the development of a 270-room, approximately 241,000 square foot hotel property. The lease commenced on October 21, 2020 and upon commencement, the Company performed classification testing. The ground lease is subject to termination rights with respect to the hotel developer’s ability to obtain construction financing for the property and as of the lease commencement date, the Company was not reasonably certain that those termination rights would not be exercised and as such it has accounted for this as an operating lease that will expire on August 28, 2022. |

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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Description of lessee's operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
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- Definition Description of terms and conditions of option to terminate lessor's operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981 + Details
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- Details
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