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Income Taxes (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011
Current: |  |  |
Domestic | $ 4,796,000 | $ 21,084,000 | $ 14,468,000
International | 4,093,000 | (3,009,000) | 2,845,000
Total Current | 8,889,000 | 18,075,000 | 17,313,000
Deferred: |  |  |
Domestic | 5,591,000 | 5,444,000 | (70,000)
International | (2,272,000) | (719,000) | (375,000)
Total Deferred | 3,319,000 | 4,725,000 | (445,000)
Provision for income taxes | 12,208,000 | 22,800,000 | 16,868,000
Effective income tax rate reconciliation |  |  |
Federal statutory rate (as a percent) | 35.00% | 35.00% | 35.00%
Foreign tax rate benefit (as a percent) | (8.20%) | (11.80%) | (11.00%)
Research and development tax credits (as a percent) | (14.60%) | (0.50%) | (8.50%)
Release of prior year unrecognized tax benefits (as a percent) |  | (8.40%) |
Intercompany technology license (as a percent) |  | 11.80% | 10.40%
Excess officer compensation (as a percent) | 1.90% | 1.00% | 3.20%
Valuation allowance | 3.80% |  |
Nondeductible acquisition costs (as a percent) | 0.20% | 0.10% | 2.90%
Other (as a percent) | 1.60% | (0.80%) | 0.20%
Effective income tax rate (as a percent) | 19.70% | 26.40% | 32.20%
Undistributed earnings of foreign subsidiaries | 292,300,000 |  |
Income before income taxes |  |  |
Domestic | 41,849,000 | 80,494,000 | 48,282,000
Foreign | 20,178,000 | 5,854,000 | 4,058,000
Income before income taxes | 62,027,000 | 86,348,000 | 52,340,000
Valuation allowance related to certain state loss and research and development tax credit carryforwards | 1,700,000 |  |
Release of valuation allowance due to the expiration of certain state net operating loss carryforwards | 400,000 |  |
Reduction of valuation allowance related to an adjustment of certain acquired state net operating losses and research and development tax credit carryforwards | 200,000 |  |
Deferred tax assets: |  |  |
Net operating loss carryforwards | 38,399,000 | 35,847,000 |
Research and development tax credit carryforwards | 9,276,000 | 8,447,000 |
Stock-based compensation | 6,757,000 | 8,133,000 |
Capitalized research and development | 8,999,000 | 9,708,000 |
Deferred income on shipments to distributors | 5,733,000 | 3,933,000 |
Accrued liabilities and other | 8,302,000 | 7,503,000 |
Deferred tax assets | 77,466,000 | 73,571,000 |
Less: Valuation allowance | (3,775,000) | (2,114,000) |
Deferred tax assets, net | 73,691,000 | 71,457,000 |
Deferred tax liabilities: |  |  |
Acquired intangibles | 38,444,000 | 28,653,000 |
Depreciation and amortization | 2,022,000 | 1,076,000 |
Prepaid expenses and other | 1,889,000 | 1,447,000 |
Deferred tax liabilities | 42,355,000 | 31,176,000 |
Net deferred tax assets | $ 31,336,000 | $ 40,281,000 |

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