Income (Loss) Per Common Share - Schedule of Reconciliation of Basic Net Loss Per Share and Diluted Loss Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income (loss) per common share:
Net income (loss)	$ 22,031	$ (189,170)	$ 36,451	$ (484,722)
Shares outstanding: Weighted average common shares outstanding - basic	2,040,052	2,037,266	2,038,659	2,037,266
Shares outstanding: Effect of the assumed exercise of dilutive stock options
Shares outstanding: Weighted average common shares outstanding - dilutive	2,040,052	2,037,266	2,038,659	2,037,266
Income (loss) per common share: Basic	$ 0.01	$ (0.09)	$ 0.02	$ (0.24)
Income (loss) per common share: Diluted	$ 0.01	$ (0.09)	$ 0.02	$ (0.24)