Note P - Impact of Accounting Method Change - Adjustment to Financial Statements (Details) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Dec. 29, 2023	Dec. 30, 2022	Jun. 30, 2023
Benefit plan adjustments, income taxes	$ 13	$ 13	$ 8	$ 4
Unrealized loss on cash flow hedge, income taxes	$ 0	$ 0	$ 0	$ 0
Preferred Shares, Authorized (in shares)	200,000	200,000	200,000	200,000	200,000
Preferred Shares, Issued (in shares)	0	0	0	0	0
Preferred Shares, No Par Value (in dollars per share)	$ 0	$ 0	$ 0	$ 0	$ 0
Common shares, authorized (in shares)	30,000,000	30,000,000	30,000,000	30,000,000	30,000,000
Common shares, shares issued (in shares)	14,632,802	14,632,802	14,632,802	14,632,802	14,632,802
Common shares, no par value (in dollars per share)	$ 0	$ 0	$ 0	$ 0	$ 0
Treasury Stock, Common, Shares (in shares)	639,006	819,398	639,006	819,398	814,734
Previously Reported [Member]
Benefit plan adjustments, income taxes		$ 1		$ 3
Unrealized loss on cash flow hedge, income taxes		$ 0		$ 0
Preferred Shares, Authorized (in shares)		200,000		200,000
Preferred Shares, Issued (in shares)		0		0
Preferred Shares, No Par Value (in dollars per share)		$ 0		$ 0
Common shares, authorized (in shares)		30,000,000		30,000,000
Common shares, shares issued (in shares)		14,632,802		14,632,802
Common shares, no par value (in dollars per share)		$ 0		$ 0
As Reported Under New Method [Member]
Benefit plan adjustments, income taxes		$ 13		$ 4