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BALANCE SHEETS (Parenthetical) - USD ($)
Jun. 29, 2018
Mar. 30, 2018
Statement of Financial Position [Abstract]    
Allowances for doubtful accounts $ 0 $ 11,562
Accumulated depreciation and amortization $ 9,518,961 $ 9,377,361
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 10,000,000 10,000,000
Common stock, shares issued 2,323,468 2,303,468
Common stock, shares outstanding 2,323,468 2,303,468