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Commitments and Contingencies (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2004
Dec. 31, 2002
Jun. 30, 2022
Business Acquisition [Line Items]      
Purchase obligation     $ 3.0
Minimum      
Business Acquisition [Line Items]      
Remaining lease term     1 year
Maximum      
Business Acquisition [Line Items]      
Remaining lease term     8 years
Travel Zoo Com Corporation      
Business Acquisition [Line Items]      
Period for receiving shares under merger 2 years 2 years  
Number of shares exchanged under merger (in shares)   1