Income Per Common Share - Reconciliation of the number of shares used in the calculation of basic income per share and diluted income per share (Details) (USD $)	3 Months Ended			6 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Notes To Financial Statements (Details)
Net income (loss)	$ 763	$ (63,217)	$ 79,272	$ (62,454)	$ 183,657
Weighted average common shares outstanding – basic	2,035,949		2,029,926	2,035,949	2,029,938
Effect of the assumed exercise of dilutive stock options	2,291		6,550		11,331
Weighted average common shares outstanding – dilutive	2,038,240		2,036,476	2,035,949	2,041,269
Earnings per common share: Basic	$ 0.00		$ 0.04	$ (0.03)	$ 0.09
Earnings per common share: Diluted	$ 0.00		$ 0.04	$ (0.03)	$ 0.09