Note G - Pension and Other Postretirement Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 29, 2024	Mar. 31, 2023	Mar. 29, 2024	Mar. 31, 2023
Pension Plan [Member]
Service cost	$ 95	$ 106	$ 283	$ 309
Prior service cost	0	8	0	25
Interest cost	896	912	2,688	2,648
Expected return on plan assets	(1,049)	(1,053)	(3,145)	(3,173)
Amortization of transition obligation	10	9	29	27
Amortization of prior service cost	9	9	26	27
Amortization of actuarial net loss	15	639	47	1,873
Net periodic benefit (gain) cost	(24)	630	(72)	1,736
Other Postretirement Benefits Plan [Member]
Service cost	2	2	6	7
Interest cost	48	53	143	159
Amortization of prior service cost	(22)	(69)	(66)	(206)
Amortization of actuarial net loss	(155)	(10)	(465)	(29)
Net periodic benefit (gain) cost	$ (127)	$ (24)	$ (382)	$ (69)