Note D - Other Comprehensive Loss - Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Balance	$ 82,595	$ 88,772
Balance	80,185	88,815
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(278)	(380)
OCI/OCL before reclassifications	0	0
Amounts reclassified from OCI to Sales	0	0
Tax effect of OCI activity	(14)	(5)
Net current period OCI/OCL	(14)	(5)
Balance	(292)	(385)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	172	(110)
OCI/OCL before reclassifications	(807)	670
Amounts reclassified from OCI to Sales	58	50
Tax effect of OCI activity	151	(218)
Net current period OCI/OCL	(598)	502
Balance	(426)	392
Accumulated Gain (Loss), Net, Swap Derivative, Parent [Member]
Balance	84	407
OCI/OCL before reclassifications	(111)	(91)
Amounts reclassified from OCI to Sales	0	0
Tax effect of OCI activity	27	30
Net current period OCI/OCL	(84)	(61)
Balance	0	346
AOCI Attributable to Parent [Member]
Balance	(22)	(83)
OCI/OCL before reclassifications	(918)	579
Amounts reclassified from OCI to Sales	58	50
Tax effect of OCI activity	164	(193)
Net current period OCI/OCL	(696)	436
Balance	$ (718)	$ 353