v3.26.1
Note 4 - Intangible Assets (Tables)
3 Months Ended
Jun. 30, 2026
Notes Tables  
Intangible Asset, Finite-Lived [Table Text Block]
   

June 30, 2026

   

March 31, 2026

 
   

Cost

   

Weighted

Average

Amortization

Period

(Years)

   

Accumulated

Amortization

   

Net

Carrying

Amount

   

Cost

   

Weighted

Average

Amortization

Period

(Years)

   

Accumulated

Amortization

   

Net

Carrying

Amount

 

Patents & Trademarks

  $ 35,794     10 - 15     $ (30,390 )   $ 5,404     $ 35,794     10 - 15     $ (29,959 )   $ 5,835  

Software

  $ 14,515     3     $ (13,310 )   $ 1,205     $ 14,515     3     $ (12,100 )   $ 2,415  
                                                             
    $ 50,309           $ (43,700 )   $ 6,609     $ 50,309           $ (42,059 )   $ 8,250  
Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]

For the

fiscal years

ended

March 31,

       

2027

  $ 2,929  

2028

    1,724  

2029

    1,491  

2030

    465  
         
    $ 6,609