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Note 2 - Acquisition (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Amortization of Intangible Assets |  | $ 411 | $ 229 | $ 1,226 | $ 684
Cost of Revenue |  | 33,752 | $ 27,012 | 108,713 | $ 88,889
Electrochem Solutions, Inc. [Member] |  |  |  |  |
Business Combination, Consideration Transferred | $ 50,000 |  |  |  |
Payments to Acquire Businesses, Gross | 48,022 |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred | 1,978 |  |  |  |
Business Combination, Recognized Liability Assumed, Lease Obligation | $ 230 |  |  |  |
Business Combination, Acquiree's Revenue since Acquisition Date, Actual |  | 6,797 |  | 23,718 |
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual |  | 251 |  | 2,118 |
Amortization of Intangible Assets |  | 178 |  | 535 |
Cost of Revenue |  | 40 |  | 120 |
Increase in Cost of Products Sold From Consulting Costs |  |  |  | 54 |
Business Combination, Acquisition-Related Cost, Expense |  | $ 345 |  | $ 607 |

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