Summary of Significant Accounting Policies - Commissions Related to Franchise Sales (Details) - Capitalized contract costs for commissions $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Capitalized Contract Cost [Line Items]
Balance at beginning of period	$ 3,974
Additions to contract cost for new activity	(2,737)
Expense recognized	(2,486)
Balance at end of period	$ 4,225