CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 15, 2017	Dec. 31, 2016	Jul. 09, 2016
Receivables allowance (in dollars)	$ 532	$ 910	$ 453
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	14,364,586	14,304,959	14,271,209
Common stock, shares outstanding	14,364,586	14,304,959	14,271,209