NET INCOME (LOSS) PER SHARE (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Schedule of Earnings Per Share [Line Items]
Net income (loss)	$ 537,000	$ (412,000)	$ 4,918,000	$ (13,487,000)
Weighted Average Number of Shares Outstanding Reconciliation
Weighted-average shares outstanding - basic	73,731	59,024	71,215	58,881
Weighted-average shares outstanding - diluted	75,023	59,024	72,637	58,881
Basic (in dollars per share)	$ 0.01	$ (0.01)	$ 0.07	$ (0.23)
Diluted (in dollars per share)	$ 0.01	$ (0.01)	$ 0.07	$ (0.23)
Stock Options and Restricted Stock Units
Weighted Average Number of Shares Outstanding Reconciliation
Antidilutive securities excluded from computation of earnings per share	$ 2,900,000	$ 5,800,000	$ 2,300,000	$ 5,800,000
Stock Options and Restricted Stock Units
Weighted Average Number of Shares Outstanding Reconciliation
Effect of dilutive stock options and restricted stock units	1,292	0	1,422	0