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Debt - Convertible Senior Notes (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 06, 2021
USD ($)
shares
Jun. 01, 2020
USD ($)
D
$ / shares
Jan. 01, 2022
USD ($)
Jan. 02, 2021
USD ($)
Mar. 06, 2017
USD ($)
Debt          
Loss on debt extinguishment     $ (3,370) $ (4,060)  
0.625% Convertible Senior Notes (2025 Notes)          
Debt          
Principal amount   $ 535,000      
Semi-annual interest rate   0.625% 0.625%    
Conversion rate, shares per $1,000 principal   8.1980      
Conversion, number of shares of common stock   4,400      
Initial conversion price | $ / shares   $ 121.98      
Debt issuance costs   $ 10,400      
0.625% Convertible Senior Notes (2025 Notes) | Conversion of Notes, Holders          
Debt          
Number of trading days within 30 trading day period | D   20      
Number of consecutive trading days | D   30      
Stock price trigger per share | $ / shares   $ 159.51      
Stock price trigger, as a percentage of conversion price   130.00%      
Number of consecutive business days after the 10 consecutive trading day period | D   5      
Number of consecutive trading days before the five consecutive business days | D   10      
Maximum threshold stock price, as a percentage of conversion price   98.00%      
0.625% Convertible Senior Notes (2025 Notes) | Conversion of Notes, Company          
Debt          
Stock price trigger, as a percentage of conversion price   130.00%      
Number of consecutive business days after the 10 consecutive trading day period | D   20      
Number of consecutive trading days before the five consecutive business days | D   30      
1.375% Convertible Senior Notes (2022 Notes)          
Debt          
Principal amount         $ 400,000
Semi-annual interest rate         1.375%
1.375% Convertible Senior Notes (2022 Notes) | Conversion of Notes, Holders          
Debt          
Principal amount of notes for conversion $ 130,400        
Cash paid upon conversion $ 130,400        
Number of shares issued in connection with conversion | shares 528,022        
Debt amount redeemed $ 10,200        
1.375% Convertible Senior Notes (2022 Notes) | Conversion of Notes, Holders | Interest expense          
Debt          
Loss on debt extinguishment     $ 3,400    
1.375% Convertible Senior Notes (2022 Notes) | Conversion of Notes, Company          
Debt          
Remaining principal amount $ 140,600