Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares shares in Thousands	Mar. 30, 2019	Dec. 29, 2018	[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)	60,000	60,000
Common stock, shares issued (in shares)	41,015	40,763
Common stock, shares outstanding (in shares)	41,015	40,763

[1] Derived from December 29, 2018 audited financial statements