Intangible Assets and Goodwill - Schedule of Changes in Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Changes to goodwill
Beginning Balance	$ 159,038	$ 150,684
Goodwill recognized from acquisitions	16,726	8,207
Effect of changes in foreign currency exchange rates	71	147
Ending Balance	175,835	159,038
Total Real Estate
Changes to goodwill
Beginning Balance	147,238	138,884
Goodwill recognized from acquisitions	9,893	8,207
Effect of changes in foreign currency exchange rates	71	147
Ending Balance	157,202	147,238
Mortgage
Changes to goodwill
Beginning Balance	11,800	11,800
Goodwill recognized from acquisitions	6,833
Ending Balance	$ 18,633	$ 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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section S99
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-Name Accounting Standards Codification
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