Note A - Organization and Summary of Significant Accounting Policies - Calculation of Basic and Diluted Net Income per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Numerator
Net Income (Loss) Attributable to Parent	$ 9,546	$ 3,346
Denominator
Basic weighted average common shares outstanding (in shares)	6,523,555	6,753,239
Dilutive effect of stock options and restricted stock shares (in shares)	117,000	53,000
Diluted weighted average common shares outstanding (in shares)	6,640,728	6,806,385
Basic net income per common share (in dollars per share)	$ 1.46	$ 0.50
Diluted net income per common share (in dollars per share)	$ 1.44	$ 0.49