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Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Reconciliation of effective tax rate to the U.S. federal statutory tax rate
A reconciliation of the U.S. federal statutory tax rate to the Company’s effective income tax rate is as follows:
 
Three months ended March 31,
 
2017
 
2016
U.S. federal statutory tax rate
(35.0
)%
 
(35.0
)%
State income taxes, net of federal benefit
(2.2
)
 
(3.0
)
Non-U.S. income taxed at different rates
0.5

 
0.5

Excess tax benefit related to stock-based awards
6.2

 
—

Other
0.4

 
0.5

Effective income tax rate
(30.1
)%
 
(37.0
)%