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Leases - Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 22, 2017 | Mar. 31, 2010 | Dec. 31, 2020 | Dec. 31, 2019
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term of aircraft operating lease agreement |  | 8 years |  |
Periodic payments for aircraft operating lease agreement |  | $ 690 |  |
Fixed amount of early purchase option |  | $ 26,685 |  |
Aircraft operating lease renewal term | 10 years |  |  |
Periodic payments for aircraft renewal operating lease agreement | $ 442 |  |  |
Collateral deposit for aircraft operating lease | $ 2,500 |  |  |
Finance lease obligations |  |  | $ 5,941 | $ 5,419
Arithmetic Average |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term for most restaurants |  |  | 15 years |

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- Definition Lease Renewal Term Of Aircraft Operating Lease Agreement + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 Reference 2: 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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- Definition Term of lessor's operating lease, 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 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981 + Details
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