Note D - Other Comprehensive Loss - Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Balance	$ 80,185	$ 88,815	$ 82,595	$ 88,772
Balance	79,141	85,455	79,141	85,455
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(292)	(385)	(278)	(380)
OCI/OCL before reclassifications	0	0	0	0
Amounts reclassified from OCI to Sales	0	0	0	0
Tax effect of OCI activity	6	(5)	(8)	(10)
Net current period OCI/OCL	6	(5)	(8)	(10)
Balance	(286)	(390)	(286)	(390)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	(426)	392	172	(110)
OCI/OCL before reclassifications	1,183	(503)	376	167
Amounts reclassified from OCI to Sales	(105)	(127)	(47)	(77)
Tax effect of OCI activity	(214)	134	(63)	(84)
Net current period OCI/OCL	864	(496)	266	6
Balance	438	(104)	438	(104)
Accumulated Gain (Loss), Net, Swap Derivative, Parent [Member]
Balance	0	346	84	407
OCI/OCL before reclassifications	0	(125)	(111)	(215)
Amounts reclassified from OCI to Sales	0	0	0	0
Tax effect of OCI activity	0	31	27	60
Net current period OCI/OCL	0	(94)	(84)	(155)
Balance	0	252	0	252
AOCI Attributable to Parent [Member]
Balance	(718)	353	(22)	(83)
OCI/OCL before reclassifications	1,183	(628)	265	(48)
Amounts reclassified from OCI to Sales	(105)	(127)	(47)	(77)
Tax effect of OCI activity	(208)	160	(44)	(34)
Net current period OCI/OCL	870	(595)	174	(159)
Balance	$ 152	$ (242)	$ 152	$ (242)