Note N - Lease Liabilities - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 26, 2021	Mar. 27, 2020	Mar. 26, 2021	Mar. 27, 2020
Amortization of right-of-use assets	$ 154	$ 49	$ 421	$ 127
Interest on lease liabilities	73	14	201	40
Operating lease cost	717	789	2,097	2,384
Short-term lease cost	17	18	29	43
Variable lease cost	36	17	118	42
Total lease cost	997	887	2,866	2,636
Less: Sublease income	(23)	(53)	(135)	(159)
Net lease cost	$ 974	$ 834	$ 2,731	$ 2,477