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Warranty Reserves | 3 Months Ended
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Jul. 27, 2019
Warranty Reserves |
Warranty Reserves | 7. Warranty Reserves ​ The Company accrues an estimate of its exposure to warranty claims based upon both current and historical product sales data and warranty costs incurred. The warranty reserve is included in other current liabilities. The related expense is included in cost of sales. Warranty reserve activity is summarized as follows for the three months ended July 27, 2019 and July 28, 2018, respectively (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​
​ | ​ | July 27, | ​ | July 28, | ​
​ |  | 2019 |  | 2018 | ​
Beginning balance | ​ | $ | 1,704 | ​ | $ | 2,090 | ​
Warranty expense | ​ |  | 549 | ​ |  | 611 | ​
Changes in estimates related to pre-existing warranties | ​ | ​ | — | ​ | ​ | 712 | ​
Warranty costs settled | ​ |  | (540) | ​ |  | (275) | ​
Ending balance | ​ | $ | 1,713 | ​ | $ | 3,138 | ​
​ During the three months ended July 28, 2018, the Company revised its estimates based on the results of additional engineering studies and recorded incremental warranty reserve charges totaling $712,000 related to the estimated costs to repair a component of certain small UAS that were delivered in prior periods. At July 27, 2019, the total remaining warranty reserve related to the estimated costs to repair the impacted UAS was $222,000. As of July 27, 2019 a total of $254,000 of costs related to this warranty have been incurred.

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- Definition The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -URI http://asc.fasb.org/topic&trid=2155896 + Details
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