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Balance Sheet Components (Details) (USD $) In Thousands, unless otherwise specified | Mar. 30, 2014 | Dec. 29, 2013
--- | --- | ---
Inventories: |  |
Raw materials | $ 0 | $ 19
Work-in-process | 1,620 | 1,343
Finished goods | 3,604 | 2,774
Inventories | 5,224 | 4,136
Other current assets: |  |
Prepaid expenses | 846 | 845
Other | 78 | 427
Other current assets | 924 | 1,272
Accrued liabilities: |  |
Employee related accruals | 1,640 | 2,821
Other | 1,004 | 698
Accrued liabilities | $ 2,644 | $ 3,519

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