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Long-Term Debt - Summary of Line of Credit Activity (Details) - USD ($)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Debt Disclosure [Abstract]    
Balance $ 795,000
Borrowings 935,000 1,285,000
Repayments 550,000 490,000
Balance $ 1,180,000 $ 795,000