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Note 21 - Commitments and Contingencies (Details Textual) - Eagle View Technologies, Inc. and Pictometry International Group, Inc. v. Xactware Solutions, Inc. and Verisk Analytics, Inc. [Member] $ in Millions	Feb. 16, 2021 USD ($)	Sep. 25, 2019 USD ($)	Jan. 29, 2019	Oct. 08, 2015	Dec. 31, 2019 USD ($)
Loss Contingency, Patents Allegedly Infringed, Number			5	7
Loss Contingency, Pending Claims, Number, Ending Balance		6
Loss Contingency, Damages Sought, Value		$ 125
Loss Contingency Accrual, Ending Balance					$ 125
Subsequent Event [Member]
Loss Contingency, Damages Awarded, Value	$ 375

X

- Definition

Amount of loss contingency liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount of damages awarded to the plaintiff in the legal matter.

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-Paragraph 9
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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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-Subparagraph (a)
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- Definition

Number of another entity's patents that the entity has allegedly infringed.

+ References

No definition available.

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Number of pending claims pertaining to a loss contingency.

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-SubTopic 20
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