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Note H - Weighted Average Shares Outstanding (Detail) - Weighted average shares of common stock outstanding	3 Months Ended		9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012
Weighted average shares outstanding-basic	9,017,613	9,610,125	9,142,296	9,886,100
Dilutive options and restricted stock	433,860	388,165	451,558	333,696
Weighted average shares outstanding-diluted	9,451,473	9,998,290	9,593,854	10,219,796
Antidilutive securities not included:
Options	45,000	35,000	41,667	28,333

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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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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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