Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 26, 2015
Receivables allowance (in dollars)	$ 910	$ 1,086
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	14,304,959	14,179,844
Common stock, shares outstanding	14,304,959	14,179,844