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Balance Sheet Components - Expected revenue recognition (Details)
$ in Thousands
Apr. 03, 2021
USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Deferred revenue expected to be recognized $ 70,889
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-04  
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Deferred revenue expected to be recognized $ 10,473
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligations expected to be satisfied in 6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-03  
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Deferred revenue expected to be recognized $ 15,360
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligations expected to be satisfied in 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-02  
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Deferred revenue expected to be recognized $ 13,432
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligations expected to be satisfied in 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01  
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Deferred revenue expected to be recognized $ 11,382
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligations expected to be satisfied in 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-09-29  
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Deferred revenue expected to be recognized $ 20,242
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligations expected to be satisfied in