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Income Taxes - Deferred tax asset and liability components (Details) - USD ($)
Feb. 28, 2022
Feb. 28, 2021
Deferred tax asset    
Allowance for inventory $ 69,000 $ 66,000
Allowance for accounts receivable 12,000 13,000
Accrued expenses and other 160,000 181,000
Deferred tax asset – Long Term 241,000 260,000
Deferred tax liability    
Building and leasehold depreciation (169,000) (206,000)
Deferred tax liability – Long Term $ (169,000) $ (206,000)