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Goodwill | 9 Months Ended
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Jan. 28, 2023
Goodwill. |
Goodwill | ​ 9. Goodwill ​ The following table presents the changes in the Company’s goodwill balance (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Small UAS | ​ | TMS | ​ | MUAS | ​ | HAPS | ​ | All other | ​ | Total
Balance at April 30, 2022 | ​ | $ | 6,340 | ​ | $ | — | ​ | $ | 290,157 | ​ | $ | — | ​ | $ | 37,850 | ​ | $ | 334,347
Additions to goodwill | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,633 | ​ | ​ | — | ​ | ​ | 575 | ​ | ​ | 2,208
Balance at January 28, 2023 | ​ | $ | 6,340 | ​ | $ | — | ​ | $ | 291,790 | ​ | $ | — | ​ | $ | 38,425 | ​ | $ | 336,555
​ The goodwill addition to MUAS is attributable to the Planck acquisition. The goodwill additions to the column entitled “All other” is attributable to the Telerob acquisition recorded in Euros and translated to dollars at each reporting date. The MUAS reporting unit is considered at an increased risk of failing future quantitative goodwill impairment tests as the estimated fair value exceeded the carrying value by approximately 10% during the most recent annual goodwill impairment test during the fiscal year ended April 30, 2022. The Company’s annual impairment test for the fiscal year ending April 30, 2023 will be performed during the fourth quarter. The intangibles included in the MUAS reporting unit of $56,000,000 as of January 28, 2023 will also be evaluated for potential impairment during the fourth quarter. Refer to Note 18—Business Acquisitions and Note 21—Subsequent Events for further details.

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