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Income taxes (Tables)
12 Months Ended
Feb. 28, 2021
Income Tax Disclosure [Abstract]  
Schedule of components of income tax expense
   2021   2020 
Current:        
Federal  $-   $5,880 
State   800    4,000 
Total   800    9,880 
           
Deferred:          
Federal   -    - 
State   -    - 
Total  $-   $- 
           
Total Provision  $800   $9,880 
Schedule of valuation allowance for the deferred tax assets on the expected future tax benefits from the net operating loss carry forwards
   2021   2020 
Expected tax benefit   21%   21%
State tax benefit, net of federal benefit   7%   7%
Changes in valuation allowance   -28%   -28%
Total   0%   0%
Schedule of the significant components of our deferred tax asset
   2021   2020 
Deferred tax asset          
Primarily relating to net operating loss carry-forwards, but also reserves for inventory and accounts receivable, stock-based compensation and other  $38,104,000   $40,984,000 
Valuation allowance   (38,104,000)   (40,984,000)
Net deferred tax asset  $-   $-