Note H - Segment Information - Net Sales by Geographic Region (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Net sales	$ 19,613	$ 19,127	$ 56,926	$ 52,757
UNITED STATES
Net sales	11,857	8,992	30,941	26,695
Markets Outside the United States [Member]
Net sales	$ 7,756	$ 10,135	$ 25,985	$ 26,062