Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Apr. 02, 2022	Jan. 01, 2022
Preferred stock par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, authorized (in shares)	40,000,000	40,000,000
Common stock, issued (in shares)	17,115,290	16,903,157
Common stock, outstanding (in shares)	10,096,588	10,290,935
Treasury stock, shares (in shares)	7,018,702	6,612,222