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Revenues (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Sep. 28, 2019 | Mar. 30, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Deferred revenue | $ 18,578 | $ 17,150
Deferred revenue, current | 13,034 | 12,059
Deferred revenue, noncurrent | $ 5,600 | $ 5,100
Minimum [Member] |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Payment term | 15 days |
Maximum [Member] |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Payment term | 45 days |
Tire Road Hazard Warranty [Member] | Minimum [Member] |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Revenue recognition, contract term | 21 months |
Tire Road Hazard Warranty [Member] | Maximum [Member] |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Revenue recognition, contract term | 36 months |

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