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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 26, 2015
--- | --- | ---
Deferred tax assets: |  |
Reserves and accruals | $ 11,043 | $ 13,712
Deferred revenue | 349 | 1,154
Shared based compensation | 2,590 | 3,856
Tax credit carry-forwards | 10,112 | 8,658
Net operating losses | 8,434 | 13,218
Depreciation & amortization | (2,898) | 366
Other | (1,252) | 94
Total deferred tax assets | 28,378 | 41,058
Less: Valuation allowance | (10,980) | (36,786)
Total deferred tax assets net of valuation allowance | 17,398 | 4,272
Deferred tax liabilities: |  |
Depreciation & amortization | (6) | (2,537)
Other | (14) | (1,137)
Total deferred tax liabilities | (20) | (3,674)
Net deferred tax assets | $ 17,378 | $ 598

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