Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares shares in Thousands	Mar. 29, 2025	Dec. 28, 2024
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 1	$ 1
Preferred Stock, Shares Authorized (in shares)	1,000	1,000
Preferred Stock, Shares Issued (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 1	$ 1	[1]
Common Stock, Shares Authorized (in shares)	90,000	90,000	[1]
Common Stock, Shares, Outstanding (in shares)	49,601	49,601	[1]
Common Stock, Shares, Issued (in shares)	49,601	49,601	[1]
Treasury Stock, Common, Shares (in shares)	3,106	2,891	[1]

[1] Derived from December 28, 2024, audited financial statements