Note 3 - Business Combination (Details Textual) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Jan. 29, 2025	Apr. 30, 2026	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Ydentic B.V. [Member] | Ydentic Holding B.V. [Member]
Subsidiary, Ownership Percentage, Parent	100.00%
Ydentic Holding B.V. [Member]
Business Combination, Voting Equity Interest Acquired, Percentage	80.00%
Business Combination, Consideration Transferred and to be Transferred	$ 20.4
Payments to Acquire Businesses, Gross	$ 14.9
Ydentic Holding B.V. [Member] | Subsequent Event [Member]
Business Acquisition, Settlement of Liability, Percentage of Shares Outstanding		6.67%
Payments to Settle Business Acquisition Liability		$ 1.8
Ydentic Holding B.V. [Member] | Shares Subject to Mandatory Redemption [Member]
Business Combination, Voting Equity Interest Acquired, Percentage	20.00%
Business Combination, Consideration Transferred, Equity Interest	$ 5.5
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Current			$ 6.3		$ 1.9
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount					6.2
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Noncurrent					$ 4.3
Schedule of Financial Instruments Subject to Mandatory Redemption, Interest Income (Expense)			$ 0.2	$ 0.8