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Revenues - Narrative (Details) - USD ($)
$ in Thousands
 6 Months Ended
Dec. 31, 2020
Jun. 30, 2021
Dec. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Liability balance   $ 1,946  
Deferred revenue recognized $ 1,200    
Gift Card Redemption      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Liability balance   5,600 $ 6,100
Deferred revenue recognized   $ 200