Revenue Disclosures - Disaggregation of Franchise Revenue by Major Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Franchise Revenue:
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 168,259	$ 166,954	$ 329,491	$ 307,930
Royalties
Disaggregation of Revenue [Line Items]
Total franchise revenue	78,006	78,124	153,248	142,401
Advertising fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	74,111	72,324	144,994	133,209
Pancake and waffle dry mix sales and other
Disaggregation of Revenue [Line Items]
Total franchise revenue	14,077	13,525	27,008	24,415
Franchise and development fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 2,065	$ 2,981	$ 4,241	$ 7,905