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Income Taxes - Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands | Dec. 28, 2019 | Dec. 29, 2018
--- | --- | ---
Deferred tax assets: |  |
Accrued expenses and reserves | $ 4,137 | $ 3,714
Inventory | 0 | 2
Deferred Revenue | 0 | 0
Stock-based and deferred compensation | 2,812 | 2,660
Interest expense disallowance | 0 | 1,283
Intangible assets | 12,294 | 14,649
Fixed assets | 256 | 281
Net operating loss carry forwards | 86,899 | 88,333
Tax credit carry forwards | 90,339 | 92,208
Capital loss carry forwards | 4,235 | 5,007
Other | 1,059 | 1,130
Total deferred tax assets | 202,031 | 209,267
Less: valuation allowance | (198,499) | (207,108)
Net deferred tax assets | 3,532 | 2,159
Deferred tax liabilities: |  |
Fixed assets | 2,620 | 1,536
Deferred revenue | 434 | 525
Other | 0 | (57)
Total deferred tax liabilities | 3,054 | 2,004
Net deferred tax assets | $ 478 | $ 155

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