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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Deferred tax assets: |  |
Reserves and accruals | $ 5,797 | $ 11,043
Deferred revenue | 240 | 349
Shared based compensation | 1,483 | 2,590
Tax credit carry-forwards | 9,669 | 10,112
Net operating losses | 9,755 | 8,434
Depreciation & amortization | (1,525) | (2,898)
Other | 207 | (1,252)
Total deferred tax assets | 25,626 | 28,378
Less: Valuation allowance | (13,702) | (10,980)
Total deferred tax assets net of valuation allowance | 11,924 | 17,398
Deferred tax liabilities: |  |
Depreciation & amortization | (12) | (6)
Other | (167) | (14)
Total deferred tax liabilities | (179) | (20)
Net deferred tax assets | $ 11,745 | $ 17,378

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