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Note 25 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loss Sharing Obligations [Member]
Unpaid Principal Balance of Funded and Sold Loans Subject to Loss Sharing Obligations		$ 4,432,000
Loss Sharing Obligations [Member] | Other Liabilities [Member]
Loss Contingency Accrual, Ending Balance		$ 15,807	$ 15,194
Antirion SGR S.p.A and Colliers Italy [Member] | Forecast [Member]
Payments to Acquire Interest in Subsidiaries and Affiliates, Total	$ 364,436

X

- Definition

The amount of unpaid principal balance of funded and sold loans subject to loss sharing obligations.

+ References

No definition available.

+ Details

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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X

- Definition

The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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