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Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]  
Schedule of differences between U.S. statutory rate and effective rate
The primary differences between the U.S. statutory rate and our effective rate are as follows: 
 
Three Months Ended
March 31,
 
2016
 
2015
 
 
 
 
U.S. statutory rate
35.0
 %
 
35.0
 %
Foreign provision
(9.8
)
 
(34.1
)
Other
(0.2
)
 
1.1

Effective rate
25.0
 %
 
2.0
 %