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Note 1 - Description of the Business (Details Textual) |  | 12 Months Ended
--- | --- | ---
Jun. 01, 2015 | Dec. 31, 2016
Number of Countries in which Entity Operates |  | 32
Number of Reportable Segments |  | 3
Conversion from Old FSV Shares to Colliers Shares [Member] |  |
Spin off Arrangement Stock Conversion Ratio | 1 |
Conversion from Old FSV Shares to First Service Shares [Member] |  |
Spin off Arrangement Stock Conversion Ratio | 1 |
Colliers and Its Affiliates and Franchisees [Member] |  |
Number of Countries in which Entity Operates |  | 66

X
- Definition Ratio applied to the conversion of stock in a spin-off arrangement, for example but not limited to, one share of the older entity converted to one share of the spin-off entity. + References No definition available. + Details
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Balance Type: | na
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- Definition The number of countries in which the entity operates as of balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
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X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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X
- Details
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Namespace Prefix: |
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X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |