Note G - Pension and Other Postretirement Benefit Plans - Net Funded Status of Pension and Postretirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 27, 2019	Dec. 28, 2018	Dec. 27, 2019	Dec. 28, 2018
Pension Plan [Member]
Service cost	$ 194	$ 251	$ 406	$ 497
Interest cost	889	1,083	1,794	2,175
Expected return on plan assets	1,240	1,333	2,488	2,664
Amortization of transition obligation	(9)	(9)	(17)	(17)
Amortization of prior service cost	(4)	1	(7)	2
Amortization of actuarial net loss	784	678	1,568	1,355
Net periodic benefit cost	632	689	1,290	1,382
Other Postretirement Benefits Plan [Member]
Service cost	4	5	9	9
Interest cost	55	76	110	152
Amortization of prior service cost	(69)		(138)
Amortization of actuarial net loss		(69)		(137)
Net periodic benefit cost	$ (10)	$ 12	$ (19)	$ 24