BALANCE SHEETS (Parenthetical) - USD ($)	Jun. 30, 2017	Mar. 31, 2017
Statement of Financial Position [Abstract]
Allowances for doubtful accounts	$ 11,562	$ 11,562
Accumulated depreciation and amortization	$ 9,154,624	$ 9,047,324
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	2,303,468	2,303,468
Common stock, shares outstanding	2,303,468	2,303,468