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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2019
Income Tax Disclosure [Abstract]  
Schedule of differences between U.S. statutory rate and effective rate
Income taxes are provided based on the U.S. statutory rate and the local statutory rate for each foreign jurisdiction adjusted for items that are allowed as deductions for federal and foreign income tax reporting purposes, but not for book purposes. The primary differences between the U.S. statutory rate and our effective rate are as follows:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2019
 
2018
 
2019
 
2018
 
 
 
 
 
 
 
 
U.S. statutory rate
21.0
 %
 
21.0
 %
 
21.0
 %
 
21.0
 %
Foreign provision
(10.1
)
 
(18.5
)
 
(9.7
)
 
(19.1
)
Other
(0.8
)
 
0.5

 
0.6

 
0.9

Effective rate
10.1
 %
 
3.0
 %
 
11.9
 %
 
2.8
 %