Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Total
Balance at Jan. 02, 2016	$ 52	$ 113	$ 1,859	$ 2,024
Balance, shares at Jan. 02, 2016	5,153,706
Net income			421	421
Stock-based compensation		25		25
Balance at Dec. 31, 2016	$ 52	138	2,280	2,470
Balance, shares at Dec. 31, 2016	5,153,706
Net income			704	704
Stock-based compensation		69		69
Balance at Dec. 30, 2017	$ 52	$ 207	$ 2,984	$ 3,243
Balance, shares at Dec. 30, 2017	5,153,706