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v3.20.4

Note 4 - Acquisitions (Details Textual) $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 29, 2020 | May 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jul. 13, 2020
Number of Businesses Acquired |  |  |  | 4 |
Servicing Asset at Fair Value, Amount, Ending Balance |  |  | $ 108,315 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) |  |  | 8 years 36 days |  |
Business Acquisition, Goodwill, Expected Tax Deductible Amount |  |  | $ 61,146 | $ 12,816 |
Measurement Input, Discount Rate [Member] |  |  |  |  |
Servicing Asset, Measurement Input |  |  | 0.115 |  |
Measurement Input, Prepayment Rate [Member] |  |  |  |  |
Servicing Asset, Measurement Input |  |  | 0.06 |  |
Servicing Contracts [Member] |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) |  |  | 8 years 73 days |  |
Americas [Member] |  |  |  |  |
Number of Businesses Acquired |  |  |  | 2 |
EMEA [Member] |  |  |  |  |
Number of Businesses Acquired |  |  |  | 1 |
Asia Pacific [Member] |  |  |  |  |
Number of Businesses Acquired |  |  |  | 1 |
Dougherty Financial Group LLC [Member] |  |  |  |  |
Number of States in which Entity Operates | 21 |  |  |  |
Maser Consulting P.A. [Member] |  |  |  |  |
Number of States in which Entity Operates |  |  |  |  | 13
Dougherty Financial Group LLC [Member] |  |  |  |  |
Number of Businesses Acquired | 4 |  |  |  |
Colliers Mortgage [Member] |  |  |  |  |
Servicing Asset at Fair Value, Amount, Ending Balance |  | $ 99,900 |  |  |
Colliers Mortgage [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |
Servicing Asset, Measurement Input |  | 0.112 |  |  |
Colliers Mortgage [Member] | Measurement Input, Prepayment Rate [Member] |  |  |  |  |
Servicing Asset, Measurement Input |  | 0.063 |  |  |
Colliers Mortgage [Member] | Servicing Contracts [Member] |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) |  | 8 years 54 days |  |  |
Colliers Mortgage [Member] | Americas [Member] |  |  |  |  |
Number of Businesses Acquired |  |  | 2 |  |
Acquisitions after December 31, 2008 [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Total |  |  | $ 115,643 | $ 84,992 |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low |  |  | 184,660 |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  |  | 208,610 |  |
Contingent Consideration Paid |  |  | 29,405 | 23,962 |
Acquisitions after December 31, 2008 [Member] | Contingent Consideration, Compensation Element [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Total |  |  | $ 17,646 | $ 23,014 |

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