Quarterly report pursuant to Section 13 or 15(d)

Contract Liabilities and Costs from Contracts with Customers - Additional Information (Details)

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Contract Liabilities and Costs from Contracts with Customers - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Contract Liabilities And Costs From Contracts With Customers [Line Items]          
Other deferred revenue $ 110,798   $ 110,798   $ 88,608
Expected duration of contracts     one year or less    
Franchisee agreement term     10 years    
Deferred costs, current portion 3,809   $ 3,809   3,281
Deferred costs, net of current portion 39,608   39,608   35,445
Franchise Agreements          
Contract Liabilities And Costs From Contracts With Customers [Line Items]          
Deferred costs, current portion 3,097   3,097   2,553
Deferred costs, net of current portion 39,537   39,537   35,417
Equipment and Other          
Contract Liabilities And Costs From Contracts With Customers [Line Items]          
Other deferred revenue 12,670   12,670   $ 6,852
Franchise revenue          
Contract Liabilities And Costs From Contracts With Customers [Line Items]          
Sales commission and fees $ 1,513 $ 1,201 $ 3,962 $ 3,300