Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2018 - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 30, 2017	15,017,522				2,823,172
Balance at Dec. 30, 2017	$ 751,000	$ 104,540,000	$ (2,395,000)	$ (65,878,000)	$ (14,987,000)	$ 22,031,000
Issuance of stock under employee stock purchase plan (in shares)	45,408
Issuance of stock under employee stock purchase plan	$ 2,000	192,000				194,000
Translation adjustment			(141,000)			(141,000)
Share-based compensation expense		201,000				201,000
Net income				1,432,000		1,432,000
Balance (in shares) at Jun. 30, 2018	15,062,930				2,823,172
Balance at Jun. 30, 2018	$ 753,000	$ 104,933,000	$ (2,536,000)	$ (64,446,000)	$ (14,987,000)	$ 23,717,000