Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Preferred stock par value (in dollars per share)	$ 1.00	$ 1.00	$ 1.00
Preferred stock, authorized (in shares)	5,000,000	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0	0
Preferred stock, outstanding (in shares)	0	0	0
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05	$ 0.05
Common stock, authorized (in shares)	40,000,000	40,000,000	40,000,000
Common stock, issued (in shares)	17,287,967	16,903,157	16,224,191
Common stock, outstanding (in shares)	9,285,318	10,290,935	11,542,880
Treasury stock, shares (in shares)	8,002,649	6,612,222	4,681,311