CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 27, 2022	Jun. 27, 2021
CURRENT ASSETS
Accounts receivable, allowance for bad debts	$ 22	$ 47
SHAREHOLDERS' EQUITY
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	26,000,000	26,000,000
Common stock, shares issued (in shares)	25,090,058	25,090,058
Common stock, shares outstanding (in shares)	18,004,904	18,004,904
Treasury stock at cost (in shares)	7,085,154	7,085,154