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Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Reconciliation between the U.S. federal statutory tax rate and effective tax rate
A reconciliation between the U.S. federal statutory tax rate and our effective tax rate is summarized as follows:
 
For the Three Months
Ended March 31,
 
2017
 
2016
Statutory rate
35.0
 %
 
35.0
 %
State taxes
0.1

 
1.0

Taxes on foreign earnings
(11.2
)
 
(8.1
)
Credits and net operating loss utilization
(0.7
)
 
(1.2
)
Purchased intangible assets
1.4

 
1.1

Manufacturing deduction
(2.1
)
 
(1.8
)
Other permanent items
0.7

 
0.6

Other
1.0

 
0.3

Effective tax rate
24.2
 %
 
26.9
 %