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Revenue Recognition Passenger Revenue (Details) - USD ($) $ in Thousands | 1 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Apr. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019
Revenue Recognition [Abstract] |  |  |
Contract with Customer, Liability, Forward Bookings |  | 38.80% |
Contract with Customer, Liability, Credit Voucher Bookings |  | 61.20% |
Revenue, Performance Obligation, Description of Timing |  | P12M |
Increase (Decrease) in Revenue from Contract with Customer |  | $ 182,200 |
Contract with Customer, Liability, Current |  | $ 354,735 | $ 249,950
Credit Voucher Term Expiration | 2 years |  |

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- Definition Contract with Customer, Liability, Forward Bookings + References No definition available. + Details
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- Definition Increase (Decrease) in Revenue from Contract with Customer + References No definition available. + Details
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 + Details
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- Definition Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 + Details
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- References No definition available. + Details
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