NET LOSS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012	Apr. 01, 2012 Stock Options and Restricted Stock Units	Jun. 30, 2013 Stock Options and Restricted Stock Units	Jul. 01, 2012 Stock Options and Restricted Stock Units	Jun. 30, 2013 Stock Options and Restricted Stock Units	Jul. 01, 2012 Stock Options and Restricted Stock Units	Jun. 30, 2013 Stock Options and Restricted Stock Units	Jul. 01, 2012 Stock Options and Restricted Stock Units
Schedule of Earnings Per Share [Line Items]
Net Income (Loss) Attributable to Parent	$ (3,567)	$ (3,346)	$ (13,075)	$ (4,465)
Weighted Average Number of Shares Outstanding Reconciliation
Weighted-average common shares outstanding - basic	58,891,000	58,507,000	58,810,000	58,463,000
Effect of diluted potential common shares from stock options and restricted stock units								0	0	0	0
Weighted-average common shares outstanding - diluted	58,891,000	58,507,000	58,810,000	58,463,000
Basic and diluted (in usd per share)	$ (0.06)	$ (0.06)	$ (0.22)	$ (0.08)
Anti-dilutive shares					7,000,000	6,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Outstanding, Number						6,400,000	7,000,000