Remaining Performance Obligation (Details) $ in Thousands	Dec. 29, 2019 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-12-30
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount	$ 8,899
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-04
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount	6,147
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-03
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount	5,898
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-02
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount	5,721
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-01-01
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount	5,518
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-12-30
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount	68,506
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: (nil)
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount	$ 100,689