Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, except Share data	Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Total
Balances at Jan. 03, 2009	$ 5	$ 89	$ 39,105	$ (430)	$ (192)	$ (26,831)	$ 11,746
Balances, shares at Jan. 03, 2009	500,000	8,824,301
Issuance of common stock under stock option plan			5				5
Issuance of common stock under stock option plan, shares		4,059
Employee stock-based compensation expense			360				360
Tax effect of stock compensation expense			350				350
Foreign currency translation adjustments					(20)		(20)
Foreign currency translation adjustments							0
Exercise of common stock warrants, $0.01 per share, shares		20,000
Net Income						2,585	2,585
Balances at Jan. 02, 2010	5	89	39,820	(430)	(212)	(24,246)	15,026
Balances, shares at Jan. 02, 2010	500,000	8,848,360
Issuance of common stock under stock option plan			88				88
Issuance of common stock under stock option plan, shares		34,558
Employee stock-based compensation expense			551				551
Tax effect of stock compensation expense			1				1
Foreign currency translation adjustments					7		7
Foreign currency translation adjustments							0
Issuance of common stock in connection with RetinaLabs acquisition			444				444
Issuance of common stock in connection with RetinaLabs acquisition, shares		103,500
Contingent consideration - shares of common stock in connection with RetinaLabs acquisition			264				264
Net Income						3,046	3,046
Balances at Jan. 01, 2011	5	89	41,168	(430)	(205)	(21,200)	19,427
Balances, shares at Jan. 01, 2011	500,000	8,986,418
Issuance of common stock under stock option plan		1	320				321
Issuance of common stock under stock option plan, shares		99,291
Employee stock-based compensation expense			544				544
Tax effect of stock compensation expense			2				2
Foreign currency translation adjustments							0
Foreign currency translation adjustments					170		170
Issuance of common stock in connection with RetinaLabs acquisition		2	(2)				0
Stock re-purchase				(648)			(648)
Stock re-purchase, shares		(167,885)
Net Income						2,610	2,610
Balances at Dec. 31, 2011	$ 5	$ 92	$ 42,032	$ (1,078)	$ (35)	$ (18,590)	$ 22,426
Balances, shares at Dec. 31, 2011	500,000	8,917,824