v3.26.1
Income taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 04, 2025
Mar. 31, 2026
Mar. 31, 2025
Income taxes [Abstract]      
Loss before income tax benefit   $ (9,493) $ (12,767)
Effective tax rate   17.92% 25.06%
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration]   California [Member], New Jersey [Member]  
Percentage limit on utilization of operating loss carryforwards   80.00%  
Operating loss carryforwards, period of credits   20 years  
Research and development expenses   $ 2,405 $ 9,511
Increase in percentage points ownership in a loss corporation   50.00%  
Net operating loss carryforwards, period of ownership change   3 years  
Recognized interest and penalties   $ 0 0
Interest and penalties accrued   0 0
Unrecognized tax benefits   0 $ 0
Bonus depreciation rate 100.00%    
Federal [Member]      
Income taxes [Abstract]      
Net operating loss carryforwards   40,438  
State [Member]      
Income taxes [Abstract]      
Net operating loss carryforwards   67,873  
Canadian Federal {Member]      
Income taxes [Abstract]      
Net operating loss carryforwards   143,346  
Research and development expenses   25,708  
Quebec [Member]      
Income taxes [Abstract]      
Net operating loss carryforwards   141,851  
Research and development expenses   27,887  
Orphan drug tax credits [Member]      
Income taxes [Abstract]      
Net operating loss carryforwards   1,900  
Scientific research and experimental development expenditures investment tax credit [Member]      
Income taxes [Abstract]      
Tax credits   $ 3,922