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Intangibles, net | 3 Months Ended
--- | ---
Oct. 31, 2020
Intangibles, net |
Intangibles, net | 8. Intangibles, net ​ The components of intangibles are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | October 31, | ​ | April 30, | ​
​ |  | 2020 |  | 2020 | ​
Technology | ​ | $ | 14,950 | ​ | $ | 14,950 | ​
Licenses | ​ | ​ | 1,006 | ​ | ​ | 1,006 | ​
Customer relationships | ​ | ​ | 873 | ​ | ​ | 873 | ​
In-process research and development | ​ | ​ | 550 | ​ | ​ | 550 | ​
Non-compete agreements | ​ | ​ | 320 | ​ | ​ | 320 | ​
Trademarks and tradenames | ​ | ​ | 68 | ​ | ​ | 68 | ​
Other | ​ | ​ | 3 | ​ | ​ | 3 | ​
Intangibles, gross | ​ | ​ | 17,770 | ​ | ​ | 17,770 | ​
Less accumulated amortization | ​ |  | (5,557) | ​ |  | (4,133) | ​
Intangibles, net | ​ | $ | 12,213 | ​ | $ | 13,637 | ​
​ The weighted average amortization period at October 31, 2020 and April 30, 2020 was four years. Amortization expense for the three and six months ended October 31, 2020 was $715,000 and $1,424,000, respectively. Amortization expense for the three and six months ended October 26, 2019 was $755,000 and $1,327,000, respectively. ​ Technology, in-process research and development, customer relationships, trademarks and tradenames, and non-compete agreements were recognized in conjunction with the Company’s acquisition of Pulse on June 10, 2019. Refer to Note 17—Business Acquisitions for further details. ​ Estimated amortization expense for the next five years is as follows (in thousands): ​
​ | ​ | ​ | ​ | ​
​ |  | Year ending |
​ | ​ | April 30, |
2021 | ​ | $ | 1,380 | ​
2022 | ​ |  | 2,829 | ​
2023 | ​ |  | 2,688 | ​
2024 | ​ |  | 2,629 | ​
2025 | ​ |  | 2,492 | ​
​ | ​ | $ | 12,018 | ​
​

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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