CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)
Beginning Balance at Jan. 03, 2009	$ 16,027	$ 295	$ 138,811	$ 2,812	$ (125,891)
Beginning Balance (in shares) at Jan. 03, 2009		29,503
Net income (loss)	(6,200)				(6,200)
Foreign currency translation adjustment	578			578
Pension liability adjustment, net of tax	(136)			(136)
Total comprehensive income (loss)	(5,758)
Common stock issued upon exercise of options	1		1
Net proceeds from public offering (in shares)		4,555
Net proceeds from public offering	8,502	46	8,456
Stock-based compensation (in shares)		312
Stock-based compensation	1,575	3	1,572
Stock issued in lieu of vacation (in shares)		6
Stock issued in lieu of vacation	24	1	23
Preferred stock accretion	(16)		(16)
Warrants issued to Broadwood	290		290
Common stock issued as payment for services (in shares)		247
Common stock issued as payment for services	424	2	422
Vested restricted stock grants (in shares)		124
Vested restricted stock grants	1	1
Ending Balance at Jan. 01, 2010	21,070	348	149,559	3,254	(132,091)
Ending Balance (in shares) at Jan. 01, 2010		34,747
Net income (loss)	53				53
Foreign currency translation adjustment	(1,154)			(1,154)
Total comprehensive income (loss)	(1,101)
Common stock issued upon exercise of options (in shares)		330
Common stock issued upon exercise of options	1,124	3	1,121
Stock-based compensation	1,333		1,333
Preferred stock accretion	1		1
Vested restricted stock grants (in shares)		7
Ending Balance at Dec. 31, 2010	22,427	351	152,014	2,100	(132,038)
Ending Balance (in shares) at Dec. 31, 2010		35,084
Net income (loss)	1,348				1,348
Foreign currency translation adjustment	(247)			(247)
Pension liability adjustment, net of tax	552			552
Total comprehensive income (loss)	1,653
Common stock issued upon exercise of options (in shares)		851
Common stock issued upon exercise of options	3,343	9	3,334
Stock-based compensation	2,035		2,035
Vested restricted stock grants (in shares)		106
Vested restricted stock grants		1	(1)
Ending Balance at Dec. 30, 2011	$ 29,458	$ 361	$ 157,382	$ 2,405	$ (130,690)
Ending Balance (in shares) at Dec. 30, 2011		36,041