Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Earnings [Member]	Treasury Stock [Member]	Total
Balance at beginning of year at Dec. 26, 2014	$ 28	$ 39,103	$ (7,737)	$ (2,362)
Stock repurchased				(54)
Share-based compensation		498
Treasury stock retired		(2,416)		2,416	$ 100
Net income (loss)			10,536		10,536
Balance at end of year at Dec. 26, 2015	28	37,185	2,799		40,012
Stock repurchased				(1,353)
Share-based compensation		489
Treasury stock retired	(1)	(1,352)		1,353	1,300
Net income (loss)			(2,342)		(2,342)
Balance at end of year at Dec. 31, 2016	$ 27	$ 36,322	$ 457		$ 36,806