Note G - Pension and Other Postretirement Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 24, 2021	Sep. 25, 2020
Pension Plan [Member]
Service cost	$ 139	$ 142
Prior service cost	10	16
Interest cost	666	668
Expected return on plan assets	(1,259)	(1,132)
Amortization of transition obligation	9	9
Amortization of prior service cost	(4)	(4)
Amortization of actuarial net loss	562	811
Net periodic benefit cost (gain)	123	510
Service cost	139	142
Other Postretirement Benefits Plan [Member]
Service cost	4	4
Interest cost	35	39
Amortization of prior service cost	(69)	(69)
Net periodic benefit cost (gain)	(30)	(26)
Service cost	$ 4	$ 4