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Description of Business and Summary of Significant Accounting Policies, Advertising Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Advertising Expense [Abstract]      
Prepaid advertising costs $ 88 $ 327  
Advertising expense $ 49,338 $ 39,862 $ 49,724