Revenue - Contract Balances (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Cost to obtain franchise contracts	$ 3,007		$ 1,973
Increase (decrease) in cost to obtain franchise contracts	1,034
Commissions and agency fees receivable, net	11,271		12,056
Increase (decrease) in commissions and agency fees receivable, net	(785)
Receivables from franchisees	31,055		29,673
Increase (decrease) in receivables from franchisees	1,382
Contract liabilities	50,759		$ 48,608
Increase (decrease) in contract liability	2,151	$ 10,408
Contract Liability [Roll Forward]
Contract liabilities at December 31, 2021	48,608
Revenue recognized during the period	(7,943)
New deferrals	10,094
Contract liabilities at September 30, 2022	$ 50,759