Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Sep. 29, 2018
Sep. 30, 2017
Operating Loss Carryforwards [Line Items]        
Discrete income tax benefit $ 4,000   $ 4,000  
Tax reserve $ 1,700   $ 1,700  
Effective tax rate (9.10%) 29.90% 6.50% 27.00%
Effective income tax rate reconciliation, foreign-derived intangible income deduction, percent 0.20%   0.30%  
Income tax benefit, provisional amount adjustment $ 400   $ 400  
Pro Forma        
Operating Loss Carryforwards [Line Items]        
Effective tax rate 18.50%   19.30%