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Balance Sheet Components (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Jan. 01, 2012
--- | --- | ---
Inventories: |  |
Raw materials | $ 33 | $ 52
Work-in-process | 2,240 | 3,261
Finished goods | 243 | 451
Inventories | 2,516 | 3,764
Other current assets: |  |
Prepaid expenses | 916 | 575
Other | 35 | 38
Other current assets | 951 | 613
Accrued liabilities: |  |
Employee related accruals | 1,619 | 845
Other | 184 | 273
Accrued liabilities | $ 1,803 | $ 1,118

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