Revenue (Schedule of Remaining Performance Obligations) (Details) $ in Thousands	Sep. 27, 2020 USD ($)
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Performance obligations, amount	$ 142,528
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-09-28
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Performance obligations, amount	$ 139,566
Performance obligations, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-09-28
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Performance obligations, amount	$ 1,828
Performance obligations, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-09-28
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Performance obligations, amount	$ 1,134
Performance obligations, period