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Note I - Stock Based Compensation (Tables)

6 Months Ended

Oct. 31, 2015

Notes Tables

Stock Option Plan Comparison [Table Text Block]

		1997 Plan				Restated Option Plan
Minimum exercise price as a percentage of fair market value at date of grant			100%				100%
Last expiration date for outstanding options			July 2, 2017				August 5, 2025
Shares available for grant at October 31, 2015			-				322,250

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Six Months Ended October 31,
		2015				2014
Expected term (years)			5.5				5.3
Risk-free interest rate			1.58	%			1.65	%
Volatility			34	%			35	%
Dividend yield			-				-

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

		Six Months Ended October 31,
(Dollars in thousands)		2015				2014
Options exercised			17,750				88,750
Cash received from option exercises		$	245			$	1,546
Intrinsic value of options exercised		$	690			$	2,129

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+ References

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-Publisher FASB



-Name Accounting Standards Codification



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