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Summary of Significant Accounting Policies - Leasing Costs and Revenue Recognition (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) community | Dec. 31, 2019 USD ($) community | Dec. 31, 2018 USD ($) community | Jan. 01, 2019 USD ($)
DEFERRED LEASING COSTS |  |  |  |
Unamortized gross balance of deferred leasing costs | $ 44,506 | $ 42,014 |  |
Accumulated amortization | $ 15,605 | 14,922 |  |
Weighted average amortization period for deferred leasing cost | 7 years 7 months 6 days |  |  |
Expected amortization expense for the five years |  |  |  |
Expected amortization expense, 2021 | $ 5,464 |  |  |
Expected amortization expense, 2022 | 4,468 |  |  |
Expected amortization expense, 2023 | 3,894 |  |  |
Expected amortization expense, 2024 | 3,403 |  |  |
Expected amortization expense, 2025 | 2,933 |  |  |
Expected amortization expense, thereafter | 8,739 |  |  |
Operating lease, right-of-use asset | 4,237 | 4,319 |  | $ 4,507
Operating lease, liability | 4,410 | 4,461 |  | $ 4,507
Percentage rents earned | $ 2,144 | $ 2,958 | $ 8,443 |
Senior Living Communities | Five Star |  |  |  |
Expected amortization expense for the five years |  |  |  |
Number of communities managed | community | 235 | 78 | 76 |

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- Definition Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for deferred leasing costs. + References No definition available. + Details
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- Definition Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for deferred leasing costs. + References No definition available. + Details
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- Definition Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for deferred leasing costs. + References No definition available. + Details
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- Definition Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for deferred leasing costs. + References No definition available. + Details
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- Definition Represents the weighted average amortization period for deferred leasing costs. + References No definition available. + Details
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- Definition For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121598990&loc=d3e40879-112712 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=121585684&loc=d3e40588-112709 + Details
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- Definition For an unclassified balance sheet, this element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This amount is before considering accumulated amortization representing the periodic charge to earnings to recognize the deferred costs over the term of the related lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=121585684&loc=d3e40588-112709 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=121585684&loc=d3e40246-112709 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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