RESTRUCTURING AND OTHER CHARGES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Accrued restructuring charge	$ 112		$ 112		$ 366
Restructuring and other charges	0	$ 111	0	$ 111
Workforce Reductions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		$ 100		$ 100
Other Current Liabilities
Restructuring Cost and Reserve [Line Items]
Accrued restructuring charge	$ 100		$ 100		$ 400