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Earnings Per Share (Detail Textuals) (Stock options)	3 Months Ended		6 Months Ended
Earnings Per Share (Detail Textuals) (Stock options)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common stock from stock options	10,000	124,200	78,600	124,200

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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