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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]  
Schedule of income taxes
The following table presents the provision for income taxes from continuing operations and the effective tax rates for the periods indicated (in thousands, except percentages):
 
 
Three Months Ended

 
March 31,
2018
 
April 1,
2017
Provision for income taxes
 
$
110

 
$
673

Effective tax rate
 
(0.9
)%
 
(2.1
)%