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Supplemental disclosure of non-cash financing activities: (Details) - USD ($)
12 Months Ended
Apr. 01, 2019
Mar. 31, 2021
Mar. 31, 2020
Supplemental Cash Flow Elements [Abstract]      
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 508,551 $ 1,830,858  
Gain (Loss) on Extinguishment of Debt   $ 722,577 $ 0