v3.26.1
Note 1 - Nature of the Business and Operations and Liquidity (Details Textual)
$ / shares in Units, $ in Thousands, R$ in Millions
1 Months Ended 12 Months Ended
May 15, 2026
BRL (R$)
Dec. 05, 2025
USD ($)
$ / shares
shares
Dec. 05, 2025
BRL (R$)
shares
Sep. 23, 2024
USD ($)
Aug. 01, 2024
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
$ / shares
Mar. 31, 2025
USD ($)
$ / shares
Mar. 31, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 05, 2025
BRL (R$)
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Jan. 31, 2024
USD ($)
Cash, Cash Equivalents, and Marketable Securities             $ 140,700              
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation             $ 23,148 $ 28,285 $ 2,138          
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares   $ 0.01     $ 0.01   $ 0.01 $ 0.01            
Payments to Acquire Property, Plant, and Equipment             $ 4,888 $ 2,415 $ 934          
Stock Issued During Period, Shares, Equity Offering (in shares) | shares           4,743,750                
Shares Issued, Price Per Share (in dollars per share) | $ / shares           $ 28                
Proceeds from Issuance or Sale of Equity           $ 124,600                
Shelf Registration, Maximum Amount to be Sold                           $ 250,000
Subsequent Event [Member]                            
Payments to Acquire Property, Plant, and Equipment | R$ R$ 37.2                          
Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member]                            
Payments to Acquire Businesses, Gross   $ 88,300 R$ 300.0                      
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares (in shares) | shares   2,417,142 2,417,142                      
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment             49,900     $ 50,300        
Business Combination, Contingent Consideration, Liability   $ 34,800         $ 39,500     $ 34,800 R$ 382.5      
Business Combination, Consideration Transferred   $ 202,900                        
Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] | Real Estate [Member]                            
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment | R$                     155.6      
Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] | Transportation Equipment [Member]                            
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment | R$                     R$ 13.4      
Megatran [Member]                            
Payments to Acquire Businesses, Gross         $ 25,000                  
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares (in shares) | shares         1,297,600                  
Business Combination, Consideration Transferred         $ 61,400                  
Business Combination, Maximum Adjustment Before Indebtedness         25,000                  
Business Combination, Share Purchase Price Quotient Amount         31,400                  
Business Combination, Potential Additional Cash Payment         $ 5,000                  
Payment for Contingent Consideration Liability, Investing Activities       $ 3,300                    
Business Combination, Contingent Consideration Arrangements, Remaining Obligation to Stockholders                       $ 0 $ 0