SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Accounting Policy Disclosures (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Accounting Policies [Line Items]
Fiscal year period	P52W	P52W	P52W
Provision for bad debts	$ (103)	$ 1,248	$ 1,351
Normal trade payment terms	30 days
Percentage of stand-alone sales in established VSOE acceptable range	80.00%
VSOE variance of median sales price	15.00%
Research and development expense	$ 3,356	$ 4,530	$ 4,867
Minimum
Accounting Policies [Line Items]
Fiscal year period	P52W
Deferred revenue recognition, straight-line basis, range	1 year
Maximum
Accounting Policies [Line Items]
Fiscal year period	P53W
Deferred revenue recognition, straight-line basis, range	5 years

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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