Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares shares in Thousands	Apr. 01, 2023	Dec. 31, 2022	[1]
Preferred stock, par value (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 value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	90,000	90,000
Common stock, shares issued (in shares)	49,283	49,276
Common stock, shares outstanding (in shares)	49,283	49,276
Treasury stock, shares (in shares)	1,711	1,767

[1] Derived from December 31, 2022 audited financial statements