Note D - Other Comprehensive Loss - Schedule of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Balance	$ 68,426	$ 82,595
Balance	69,021	80,185
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(228)	(278)
OCI before reclassifications	0	0
Amounts reclassified to sales	0	0
Tax effect on activity	0	(14)
Net current period OCI	0	(14)
Balance	(228)	(292)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	(1,187)	172
OCI before reclassifications	313	(807)
Amounts reclassified to sales	401	58
Tax effect on activity	0	151
Net current period OCI	714	(598)
Balance	(473)	(426)
AOCI Attributable to Parent [Member]
Balance	(1,415)	(22)
OCI before reclassifications	313	(918)
Amounts reclassified to sales	401	58
Tax effect on activity	0	164
Net current period OCI	714	(696)
Balance	$ (701)	(718)
Accumulated Gain (Loss), Net, Swap Derivative, Parent [Member]
Balance		84
OCI before reclassifications		(111)
Amounts reclassified to sales		0
Tax effect on activity		27
Net current period OCI		(84)
Balance		$ 0