Note H - Segment Information (Details) - Net Sales by Geographic Region (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Note H - Segment Information (Details) - Net Sales by Geographic Region [Line Items]
Net sales	$ 16,475	$ 13,686	$ 33,630	$ 30,146
United States [Member]
Note H - Segment Information (Details) - Net Sales by Geographic Region [Line Items]
Net sales	8,215	8,173	17,702	17,804
Markets Outside the United States [Member]
Note H - Segment Information (Details) - Net Sales by Geographic Region [Line Items]
Net sales	$ 8,260	$ 5,513	$ 15,928	$ 12,342