Note F - Defined Benefit Pension Plan - Components Included in Defined Benefit Pension Plan's Net Periodic Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Interest cost	$ 23	$ 21	$ 69	$ 63
Expected return on plan assets	(10)	(8)	(31)	(25)
Net periodic expense	$ 13	$ 13	$ 38	$ 38