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Income Taxes (Tables)
 9 Months Ended
Oct. 01, 2016
Income Tax Disclosure [Abstract]  
Schedule of components of income tax expense (benefit)
The components of the effective tax rate are as follows (in thousands, except percentage):
 
Quarters Ended
 
Nine Months Ended
 
October 1, 2016
 
October 3, 2015
 
October 1, 2016
 
October 3, 2015
Income (loss) before income taxes
$
2,814

 
$
(3,088
)
 
$
(20,731
)
 
$
(43,785
)
Income tax expense
2,996

 
2,116

 
5,777

 
4,879

Effective tax rate
106.5
%
 
(68.5
)%
 
(27.9
)%
 
(11.1
)%