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Revenue from Contracts with Customers - Narrative (Details) - USD ($)
6 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Revenue from External Customer [Line Items]    
Revenue recognized $ 21,000,000  
Contract with customer, performance obligation satisfied in previous period 0  
Cancellation reserve 42,458,000 $ 38,815,000
Air Bookings    
Revenue from External Customer [Line Items]    
Cancellation reserve $ 12,000,000 $ 11,000,000