Note O - Derivative Financial Instruments - Impact of the Company's Derivative Instruments on the Consolidated Statement of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 25, 2020	Sep. 27, 2019
Interest rate swap	$ 75	$ (143)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Interest rate swap	75	(143)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Interest Expense [Member]
Interest rate swap	98	11
Derivative liabilities, not designated	98	11
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Other Nonoperating Income (Expense) [Member]
Interest rate swap	(13)	0
Derivative liabilities, not designated	$ (13)	$ 0