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Note 16 - 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	Sep. 25, 2019 USD ($)	Jan. 29, 2019	Oct. 08, 2015	Sep. 30, 2020 USD ($)	Dec. 10, 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	$ 125

X

- Definition

Amount of loss contingency liability.

+ References

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

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

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- Definition

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No definition available.

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- Definition

Number of pending claims pertaining to a loss contingency.

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