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Inventories, net | 6 Months Ended
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Oct. 26, 2019
Inventories, net |
Inventories, net | 5. Inventories, net ​ Inventories consist of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | October 26, | ​ | April 30, | ​
​ |  | 2019 |  | 2019 |
Raw materials | ​ | $ | 16,695 | ​ | $ | 16,792 | ​
Work in process | ​ |  | 24,124 | ​ |  | 19,162 | ​
Finished goods | ​ |  | 22,651 | ​ |  | 25,926 | ​
Inventories, gross | ​ |  | 63,470 | ​ |  | 61,880 | ​
Reserve for inventory excess and obsolescence | ​ |  | (10,701) | ​ |  | (7,824) | ​
Inventories, net | ​ | $ | 52,769 | ​ | $ | 54,056 | ​
​ ​ During the three months ended October 26, 2019, the Company recorded inventory reserve charges of approximately $2,600,000 to impair the remaining net book value of the Company’s Quantix commercial UAS solution. For the three and six months end October 26, 2019 the Company recorded inventory reserve charges of $2,612,000 and $3,190,000, respectively. For the three and six months end October 27, 2018 the Company recorded inventory impairment charges of $841,000 and $1,190,000, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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