Income (Loss) Per Common Share - Reconciliation of the number of shares used in the calculation of basic income (Details) (USD $)	3 Months Ended			6 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Notes to Financial Statements
Net income (loss)	$ 194,051	$ 16,131	$ 763	$ 210,182	$ (62,454)
Weighted average common shares outstanding – basic	2,036,866		2,035,949	2,036,866	2,035,949
Effect of the assumed exercise of dilutive stock options	2,242		2,291	1,934
Weighted average common shares outstanding – dilutive	2,039,108		2,038,240	2,038,800	2,035,949
Earnings (loss) per common share: Basic	$ 0.10		$ 0.00	$ 0.10	$ (0.03)
Earnings (loss) per common share: Diluted	$ 0.10		$ 0.00	$ 0.10	$ (0.03)