Net Income Per Share (Details)	3 Months Ended	6 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Income Per Share [Abstract]
Weighted average common shares outstanding - basic	4,852,178	4,825,441	4,857,279	4,825,095
Stock options	20,435	57,363	20,798	55,646
Warrants	493	1,852	522	1,783
Shares used in computing net income per share - diluted	4,873,106	4,884,656	4,878,599	4,882,524
Stock options and warrants not included in computation of diluted earnings per share	13,000		13,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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+ Details