Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2016	Jan. 02, 2016
Preferred stock par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	14,716,940	14,559,381
Common stock, shares outstanding (in shares)	11,953,080	12,496,635
Treasury stock, shares (in shares)	2,763,860	2,062,746