Balance Sheets (Parenthetical) - $ / shares	Dec. 29, 2018	Dec. 30, 2017
Statement of Financial Position [Abstract]
Common stock, authorized shares	20,000,000	20,000,000
Common stock, issued shares	13,425,992	13,423,492
Common stock, outstanding shares	13,205,936	13,203,436
Common stock, par value	$ .01	$ .01