Note G - Pension and Other Postretirement Benefit Plans - Pension and Other Postretirement Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 25, 2016	Mar. 31, 2017	Mar. 25, 2016
Pension Plan [Member]
Service cost	$ 238	$ 128	$ 718	$ 386
Interest cost	1,130	1,225	3,373	3,675
Expected return on plan assets	(1,537)	(1,691)	(4,436)	(5,074)
Amortization of transition obligation	8	8	26	25
Amortization of prior service cost	1		3
Amortization of actuarial net loss	900	897	2,698	2,703
Net periodic benefit cost	740	567	2,382	1,715
Other Postretirement Benefits Plan [Member]
Service cost	6	7	19	21
Interest cost	123	151	367	453
Amortization of actuarial net loss	181	182	545	546
Net periodic benefit cost	$ 310	$ 340	$ 931	$ 1,020