Contract Liabilities and Costs from Contracts with Customers - Summary of Estimated Revenue Expected to be Recognized in Future Related to Performance Obligation (Details 1) $ in Thousands  | 
 Sep. 30, 2021  
USD ($) 
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| Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] | |
| Revenue, remaining performance obligation amount | $ 98,128 | 
| Franchise Development Fees | |
| Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] | |
| Revenue, remaining performance obligation amount | 92,977 | 
| Brand Fees | |
| Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] | |
| Revenue, remaining performance obligation amount | $ 5,151 | 
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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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