Revenue Disclosures - Disaggregation of Franchise Revenue by Major Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Franchise Revenue:
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 164,907	$ 161,126	$ 494,398	$ 469,056
Royalties
Disaggregation of Revenue [Line Items]
Total franchise revenue	76,418	75,098	229,666	217,499
Advertising fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	71,692	70,709	216,686	203,918
Pancake and waffle dry mix sales and other
Disaggregation of Revenue [Line Items]
Total franchise revenue	14,563	12,782	41,571	37,197
Franchise and development fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 2,234	$ 2,537	$ 6,475	$ 10,442