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Revenue (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Mar. 30, 2019 | Mar. 31, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |
Deferred revenue | $ 17,150 | $ 17,182
Deferred revenue, current | 12,059 | 11,941
Deferred revenue, noncurrent | $ 5,100 | $ 5,300
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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