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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2004
Dec. 31, 2002
Loss Contingencies        
Operating leases, rent expense $ 2,600 $ 3,500    
Sublease income 353 $ 359    
Purchase obligation $ 1,900      
Minimum        
Loss Contingencies        
Remaining lease term (in years) 1 year      
Term of lease 1 year      
Maximum        
Loss Contingencies        
Term of lease 8 years      
Travel Zoo Com Corporation        
Loss Contingencies        
Period for receiving shares under merger (in years)     2 years 2 years
Number of shares exchanged under merger(in shares)       1