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Combined Guarantor Subsidiaries - Leases - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) ground_lease | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) ground_lease | Sep. 30, 2018 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |
Tenant reimbursements period related to certain capital expenditure minimum |  |  | 5 years |
Tenant reimbursements period related to certain capital expenditure maximum |  |  | 15 years |
Uncollectable operating lease receivables recognized | $ (188) | $ 487 | $ 1,504 | $ 3,273
Number of ground leases | ground_lease | 8 |  | 8 |
Guarantor Subsidiaries |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Tenant reimbursements period related to certain capital expenditure minimum |  |  | 5 years |
Tenant reimbursements period related to certain capital expenditure maximum |  |  | 15 years |
Uncollectable operating lease receivables recognized | $ 94 | $ 388 | $ 1,262 | $ 1,154
Number of ground leases | ground_lease | 1 |  | 1 |
Operating lease renewal term | 5 years |  | 5 years |
Lease expense | $ 10 |  | $ 30 |

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- Definition Tenant Reimbursements Period Related to Certain Capital Expenditure Maximum, in Years + References No definition available. + Details
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- Definition Tenant Reimbursements Period Related to Certain Capital Expenditure Minimum, in Years + References No definition available. + Details
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- Definition Uncollectable Operating Lease Receivables Recognized + References No definition available. + Details
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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 Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Number of separate real estate development properties located on land subject to ground leases. + References No definition available. + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977 + Details
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- Details
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