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Revenues (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 26, 2021 | Mar. 27, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Deferred revenue | $ 18,005 | $ 16,712
Deferred revenue, current | 12,669 | 11,956
Deferred revenue, noncurrent | $ 5,300 | $ 4,700
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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