Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Earnings (Deficit) [Member]	Total
Balance at beginning of year at Dec. 30, 2017	$ 27	$ 36,843	$ (15,801)
Share-based compensation - employee		122
Treasury stock retired
Net loss			(2,192)	$ (2,192)
Balance at end of year at Jun. 30, 2018	27	36,965	(17,993)	18,999
Balance at beginning of year at Mar. 30, 2018	27	36,919	(17,001)
Share-based compensation - employee		46
Treasury stock retired
Stock repurchased
Net loss			(992)	(992)
Balance at end of year at Jun. 30, 2018	27	36,965	(17,993)	18,999
Balance at beginning of year at Dec. 29, 2018	27	36,934	(21,472)	15,489
Share-based compensation - employee		32
Treasury stock retired		(60)
Net loss			(1,491)	(1,491)
Balance at end of year at Jun. 29, 2019	27	36,906	(22,962)	13,971
Balance at beginning of year at Mar. 29, 2019	27	36,890	(22,445)
Share-based compensation - employee		16
Treasury stock retired
Stock repurchased
Net loss			(517)	(517)
Balance at end of year at Jun. 29, 2019	$ 27	$ 36,906	$ (22,962)	$ 13,971