Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Earnings (Deficit) [Member]	Treasury Stock [Member]	Total
Balance at beginning of year at Dec. 31, 2017	$ 27	$ 36,843	$ (15,801)
Share-based compensation - employee		76
Treasury stock retired
Stock repurchased
Net loss			(1,200)
Balance at end of year at Mar. 31, 2018	27	36,919	(17,001)		$ 19,945
Balance at beginning of year at Dec. 29, 2018	27	36,934	(21,472)		15,489
Share-based compensation - employee		16
Treasury stock retired		(60)		60
Stock repurchased				(60)
Net loss			(974)		(974)
Balance at end of year at Mar. 30, 2019	$ 27	$ 36,890	$ (22,446)		$ 14,471