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Property and Equipment, net | 12 Months Ended
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Apr. 30, 2020
Property and Equipment, net |
Property and Equipment, net | 7. Property and Equipment, net ​ Property and equipment, net consist of the following: ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | April 30, |
​ |  | 2020 |  | 2019 |
​ | ​ | (In thousands) |
Leasehold improvements | ​ | $ | 16,387 | ​ | $ | 12,324 | ​
Machinery and equipment | ​ |  | 46,519 | ​ |  | 40,432 | ​
Furniture and fixtures | ​ |  | 3,031 | ​ |  | 2,145 | ​
Computer equipment and software | ​ |  | 33,242 | ​ |  | 35,056 | ​
Construction in process | ​ |  | 2,508 | ​ |  | 2,411 | ​
Property and equipment, gross | ​ |  | 101,687 | ​ |  | 92,368 | ​
Less accumulated depreciation and amortization | ​ |  | (79,993) | ​ |  | (75,463) | ​
Property and equipment, net | ​ | $ | 21,694 | ​ | $ | 16,905 | ​
​ During the three months ended April 30, 2019, the Company determined that the continued less than forecasted sales of its Quantix commercial UAS solution, which launched during the fourth quarter of fiscal year 2018, was an indicator that the long-lived assets of this asset group may not be recoverable. As a result, the company performed an analysis and concluded that the projected undiscounted cash flows were less than the carrying value of the asset group (Step 1). As a result, the Company performed additional analysis to determine the amount of the impairment loss (Step 2) and recorded an impairment loss totaling $4,398,000 related to the long-lived assets of the commercial UAS Quantix solution, which is included in selling, general and administrative expense on the consolidated statements of income. The fair value of the asset group was determined based on a discounted cash flow model reflective of the Company’s revised cash flow estimates. ​ Depreciation expense for the years ended April 30, 2020, 2019 and 2018 was $7,066,000, $7,311,000 and $5,676,000, respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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