Balance Sheets (Parenthetical) - $ / shares	Mar. 28, 2020	Dec. 28, 2019
Statement of Financial Position [Abstract]
Common stock,authorized shares	20,000,000	20,000,000
Common stock, issued shares	13,427,492	13,427,492
Common stock, outstanding shares	13,207,436	13,207,436
Common stock, par value	$ .01	$ .01