COMMITMENTS AND CONTINGENCIES - Summary of Product Warranty Accrual (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Commitments and Contingencies Disclosure [Abstract]
Length of Product Warranty			12 months
Movement in Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	$ 1,542	$ 2,693	$ 1,691	$ 3,419
Warranties Issued in the period	467	664	874	1,606
Costs to service warranties	(539)	(1,222)	(1,107)	(2,435)
Warranty accrual adjustments	(21)	780	(9)	325
Ending balance	$ 1,449	$ 2,915	$ 1,449	$ 2,915

Length of Product Warranty

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph 5

-Article 9

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10

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-Name Accounting Standards Codification

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Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

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-Section 50

-Paragraph 8

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- Definition

Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

+ References

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-Publisher FASB

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-Subparagraph ((c)(4))

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Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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