CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 23, 2019	Dec. 29, 2018	Mar. 24, 2018
Receivables allowance (in dollars)	$ 548	$ 532	$ 484
Preferred stock, shares authorized	1,000,000	1,000,000	1,000,000
Preferred stock, shares issued	0	0	0
Common stock, shares authorized	30,000,000	30,000,000	30,000,000
Common stock, shares issued	14,471,496	14,438,824	14,415,690
Common stock, shares outstanding	14,471,496	14,438,824	14,415,690