Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Apr. 01, 2023	Dec. 31, 2022
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares (in shares)	20,000,000	20,000,000
Common stock, issued shares (in shares)	14,467,487	14,457,186
Common stock, outstanding shares (in shares)	14,460,486	14,450,470
Treasury Stock, Common, Shares	10,301	10,016