Note F - Defined Benefit Pension Plan - Components Included in Defined Benefit Pension Plan's Net Periodic Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Interest cost	$ 23	$ 21	$ 46	$ 42
Expected return on plan assets	(11)	(8)	(21)	(17)
Net periodic expense	$ 12	$ 13	$ 25	$ 25