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. 31, 2023	Mar. 25, 2022	Mar. 31, 2023	Mar. 25, 2022
Amortization of acturial net loss	$ (10)	$ 0	$ (29)	$ 0
Pension Plan [Member]
Service cost	106	137	309	406
Prior service cost	8	10	25	30
Interest cost	912	709	2,648	2,055
Expected return on plan assets	(1,053)	(1,258)	(3,173)	(3,773)
Amortization of transition obligation	9	9	27	28
Amortization of prior service cost	9	(4)	27	(12)
Amortization of actuarial net loss	639	562	1,873	1,687
Net periodic benefit cost	630	165	1,736	421
Service cost	106	137	309	406
Interest cost	912	709	2,648	2,055
Other Postretirement Benefits Plan [Member]
Service cost	2	4	7	11
Interest cost	53	35	159	105
Amortization of prior service cost	(69)	(69)	(206)	(206)
Net periodic benefit cost	(24)	(30)	(69)	(90)
Service cost	2	4	7	11
Interest cost	$ 53	$ 35	$ 159	$ 105