Summary of Significant Accounting Policies - Schedule of Deferred Revenue (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Balance at beginning of period	$ 45,146
New billings	59,871
Revenue recognized	(58,910)
Balance at the end of period	46,107
Franchise sales
Disaggregation of Revenue [Line Items]
Balance at beginning of period	25,069
New billings	9,787
Revenue recognized	(8,813)
Balance at the end of period	$ 26,043
Annual Dues
Disaggregation of Revenue [Line Items]
Deferred revenue recognition period	12 months
Balance at beginning of period	$ 14,539
New billings	36,030
Revenue recognized	(35,549)
Balance at the end of period	15,020
Other
Disaggregation of Revenue [Line Items]
Balance at beginning of period	5,538
New billings	14,054
Revenue recognized	(14,548)
Balance at the end of period	5,044
Annual Dues
Disaggregation of Revenue [Line Items]
Revenue recognized related to the beginning balance	13,400
Franchise sales
Disaggregation of Revenue [Line Items]
Revenue recognized related to the beginning balance	$ 7,700
Franchise sales | RE/MAX franchise agreements
Disaggregation of Revenue [Line Items]
Period of franchise agreement	5 years
Franchise sales | Motto Franchising
Disaggregation of Revenue [Line Items]
Period of franchise agreement	7 years