Intangible Assets and Goodwill - Schedule of Changes in Goodwill (Details) $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($)
Changes to goodwill
Beginning Balance	$ 135,213
Goodwill recognized related to acquisitions	15,039
Adjustments to acquisition accounting during the measurement period	700
Effect of changes in foreign currency exchange rates	(93)
Ending Balance	150,859
RE/MAX Franchising
Changes to goodwill
Beginning Balance	123,413
Goodwill recognized related to acquisitions	15,039
Adjustments to acquisition accounting during the measurement period	700
Effect of changes in foreign currency exchange rates	(93)
Ending Balance	139,059
Other
Changes to goodwill
Beginning Balance	11,800
Ending Balance	$ 11,800

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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