XML 62 R50.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Sep. 29, 2018
Sep. 30, 2017
Dec. 29, 2018
Dec. 30, 2017
Income Tax Examination [Line Items]            
Provision for income taxes $ 241 $ 5,390 $ 20,401 $ 19,552    
Tax benefit of stock-based compensation     $ 20,500      
Federal statutory income tax rate           35.00%
Revision to provisional repatriation transition tax expense for Tax Cuts and Jobs Act $ 2,600          
Scenario, Forecast [Member]            
Income Tax Examination [Line Items]            
Federal statutory income tax rate         21.00%