COMMITMENTS AND CONTINGENCIES - Summary of Product Warranty Accrual (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Length of Product Warranty			12 months
Movement in Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	$ 1,932	$ 1,542	$ 1,786	$ 1,691
Warranties issued in the period	599	467	1,151	874
Costs to service warranties	(1,099)	(539)	(1,682)	(1,107)
Warranty accrual adjustments	656	(21)	833	(9)
Ending balance	$ 2,088	$ 1,449	$ 2,088	$ 1,449