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Cost Method Investment and Collaborative Arrangement (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended 48 Months Ended
Sep. 30, 2017
Jul. 01, 2017
Oct. 01, 2016
Sep. 30, 2017
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Dec. 29, 2018
Investments, All Other Investments [Abstract]                  
Payments to acquire cost-method investment     $ 1,000   $ 0 $ 0 $ 1,000 $ 5,000  
Ownership interest percentage               22.70%  
Gross investments amount     $ 6,000            
Short-term loan to cost-method investee $ 1,000 $ 1,000   $ 2,000 0 2,000 0    
Impairment of cost-basis investment         (266) (1,761) (1,459)    
Decrease of cost method investment                 $ 4,000
Movements In Cost Method Investments [Roll Forward]                  
Beginning balance         2,288 4,049      
Impairment of cost-basis investment         (266) (1,761) (1,459)    
Ending balance         2,022 $ 2,288 $ 4,049   2,022
Prepaid royalties         $ 3,300       $ 3,300