Revenue - Disaggregation of Franchise Revenue by Major Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Franchise Revenue:
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 177,917	$ 168,259	$ 357,879	$ 329,491
Royalties
Disaggregation of Revenue [Line Items]
Total franchise revenue	82,768	78,006	166,206	153,248
Advertising fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	75,979	74,111	153,016	144,994
Pancake and waffle dry mix sales and other
Disaggregation of Revenue [Line Items]
Total franchise revenue	17,150	14,077	34,412	27,008
Franchise and development fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 2,020	$ 2,065	$ 4,245	$ 4,241