Note I - Pension and Other Postretirement Benefit Plans - Net Funded Status of Pension and Postretirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 28, 2018	Sep. 29, 2017
Pension Plan [Member]
Service cost	$ 246	$ 262
Interest cost	1,092	1,074
Expected return on plan assets	1,331	1,525
Amortization of transition obligation	(9)	(9)
Amortization of prior service cost	1	1
Amortization of actuarial net loss	(678)	(759)
Net periodic benefit cost	695	580
Service cost	246	262
Interest cost	1,092	1,074
Amortization of actuarial net loss	678	759
Other Postretirement Benefits Plan [Member]
Service cost	5	5
Interest cost	76	92
Amortization of actuarial net loss	69	(3)
Net periodic benefit cost	12	100
Service cost	5	5
Interest cost	76	92
Amortization of actuarial net loss	$ (69)	$ 3