Note 5 - Fair Value Measurements - Fair Value of Earnout Liabilities (Details) - Earnout Payment [Member] - Enercon Technologies, Ltd [Member] - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Nov. 14, 2024
Business Combination, Contingent Consideration, Liability			$ 3,300
Fair Value, Inputs, Level 3 [Member]
Earnout payment liability - 2025	$ 0	$ 4,916
Earnout payment liability - 2026	2,328	1,709
Business Combination, Contingent Consideration, Liability	$ 2,328	$ 6,625

Amount of liability recognized arising from contingent consideration in a business combination.

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