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Income Taxes (Details 2) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Reconciliation between the U.S. federal statutory tax rate and effective tax rate |  |  |
Statutory rate | 35.00% | 35.00% | 35.00%
State taxes | 0.50% | 1.20% | 3.10%
Taxes on foreign earnings | (10.00%) | (9.50%) | (6.70%)
Credits and net operating loss utilization | (1.30%) | (1.10%) | (2.60%)
Purchased intangible assets | 1.00% | 1.20% | 1.50%
Manufacturing deduction | (1.80%) | (1.80%) | (6.60%)
Permanent items | 0.70% | 0.50% | 0.80%
Contingent consideration | 0.30% | (0.40%) | (0.30%)
Effective tax rate | 24.40% | 25.10% | 24.20%

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