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Note 2 - Acquisition (Details Textual) - USD ($) $ in Thousands		3 Months Ended
	Oct. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Amortization of Intangible Assets		$ 405	$ 228
Cost of Revenue		38,001	$ 30,457
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		7,622
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual		743
Amortization of Intangible Assets		178
Cost of Revenue		60
Business Combination, Acquisition-Related Cost, Expense		$ 125

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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