Amount of liability recognized arising from contingent consideration in a business combination.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For contingent consideration arrangements recognized in connection with a business combination, the period during which the contingent consideration can be earned.

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ORGANIZATION (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
ORGANIZATION (Details) - USD ($) $ in Thousands	Feb. 04, 2022	Dec. 16, 2021	Dec. 31, 2021	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Joint Venture
Contingent consideration			$ 125,808	$ 125,808		$ 28,829	$ 5,752
GeoPhy
Joint Venture
Cash consideration	$ 85,000
Contingent consideration	$ 205,000
Contingent consideration liability earnout period	4 years
Acquisition #4 - Alliant Capital
Joint Venture
Cash consideration		$ 379,700	379,677
Contingent consideration		$ 100,000	$ 85,800	$ 85,800
Contingent consideration liability earnout period		4 years
Interim Program JV
Joint Venture
Ownership interest			15.00%	15.00%
Appraisal JV
Joint Venture
Ownership interest			50.00%	50.00%
Zellman
Subsidiary
Ownership interest in WDIB					75.00%
Maximum
Joint Venture
Contingent consideration liability earnout period				5 years