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Income Taxes - Components of Deferred Taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Jan. 02, 2016
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 21,187 | $ 25,869
Research and development tax credit carryforwards | 15,068 | 13,335
Stock-based compensation | 7,396 | 8,757
Capitalized research and development | 6,802 | 8,741
Deferred income on shipments to distributors | 9,338 | 7,413
Expected future cost-sharing adjustment | 29,719 | 25,896
Accrued liabilities and other | 11,321 | 8,619
Deferred tax assets | 100,831 | 98,630
Less: Valuation allowance | (12,361) | (10,264)
Deferred tax assets, net | 88,470 | 88,366
Deferred tax liabilities: |  |
Acquired intangible assets | 25,785 | 33,020
Depreciation and amortization | 2,939 | 2,349
Unremitted foreign earnings for expected future cost-sharing adjustment | 31,165 | 27,495
Prepaid expenses and other | 3,069 | 1,991
Deferred tax liabilities | 62,958 | 64,855
Net deferred tax assets | $ 25,512 | $ 23,511

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