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Intangibles, net | 9 Months Ended
--- | ---
Jan. 29, 2022
Intangibles, net |
Intangibles, net | 8. Intangibles, net ​ The components of intangibles are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | January 29, | ​ | April 30, | ​
​ |  | 2022 |  | 2021 | ​
Technology | ​ | $ | 57,495 | ​ | $ | 46,850 | ​
Licenses | ​ | ​ | 1,008 | ​ | ​ | 1,008 | ​
Customer relationships | ​ | ​ | 72,702 | ​ | ​ | 68,073 | ​
Backlog | ​ | ​ | 2,223 | ​ | ​ | — | ​
In-process research and development | ​ | ​ | 550 | ​ | ​ | 550 | ​
Non-compete agreements | ​ | ​ | 320 | ​ | ​ | 320 | ​
Trademarks and tradenames | ​ | ​ | 68 | ​ | ​ | 68 | ​
Other | ​ | ​ | 105 | ​ | ​ | 3 | ​
Intangibles, gross | ​ | ​ | 134,471 | ​ | ​ | 116,872 | ​
Less accumulated amortization | ​ |  | (30,646) | ​ |  | (10,604) | ​
Intangibles, net | ​ | $ | 103,825 | ​ | $ | 106,268 | ​
​ The weighted average amortization period at January 29, 2022 and April 30, 2021 was four and five years, respectively. Amortization expense for the three and nine months ended January 29, 2022 was $6,911,000 and $20,486,000, respectively. Amortization expense for the three and nine months ended January 30, 2021 was $622,000 and $2,086,000, respectively. ​ Technology, backlog and customer relationship intangible assets were recognized in conjunction with the Company’s acquisition of Telerob on May 3, 2021. The intangibles recognized in conjunction with the acquisition of Telerob are recorded in Euros, and the balances change in accordance with the foreign currency translation at reporting date. Technology and customer relationship intangible assets were recognized in conjunction with the Company’s acquisition of Arcturus on February 19, 2021. Technology and customer relationship intangible assets were recognized in conjunction with the Company’s acquisition of ISG on February 23, 2021. Refer to Note 18—Business Acquisitions for further details. ​ Estimated amortization expense for the next five years is as follows (in thousands): ​
​ | ​ | ​ | ​ | ​
​ |  | Year ending |
​ | ​ | April 30, |
2022 | ​ | $ | 7,565 | ​
2023 | ​ |  | 27,719 | ​
2024 | ​ |  | 26,870 | ​
2025 | ​ |  | 18,156 | ​
2026 | ​ |  | 13,114 | ​
​ | ​ | $ | 93,424 | ​
​

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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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