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Note 2 - Acquisition (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Aug. 01, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Cost of Revenue   $ 47,869 $ 28,065  
Net Income (Loss) Attributable to Parent   6,724 $ (2,524)  
Megatran [Member]        
Business Combination, Consideration Transferred $ 61,400      
Payments to Acquire Businesses, Gross $ 30,000      
Business Acquisition, Share Price (in dollars per share) $ 24.16      
Business Combination, Acquired Receivable, Fair Value $ 16,100      
Business Combination, Acquired Receivables, Gross Contractual Amount 16,900      
Business Combination, Acquired Receivables, Estimated Uncollectible 800      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory 700      
Cost of Revenue       $ 700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles       2,000
Megatran [Member] | Backlog [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 700     700
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) 8 years      
Megatran [Member] | Customer Relationships [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 1,300     1,300
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) 10 years      
Megatran [Member] | Selling, General and Administrative Expenses [Member]        
Business Combination, Acquisition Related Costs       $ 1,100
NWL Pacific Inc. Co., LTD [Member]        
Revenues   17,800    
Net Income (Loss) Attributable to Parent   2,500    
Amortization of Intangible Assets   $ 100