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Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Mar. 31, 2022 | Apr. 30, 2021
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill Reclassified to Discontinued Operations | $ 21,000 |  | $ 21,000 |  | $ 21,400 |
Amortization of acquired intangible assets | $ 7,379 | $ 7,399 | $ 14,902 | $ 13,328 |  |
Euro Broadband Infrastructure Sarl Step Acquisition [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Percentage of additional interest purchased in subsidiary acquired |  | 51.00% |  | 51.00% |  | 51.00%
Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Other acquired intangible assets estimated useful lives |  |  | 2 years |  |  |
Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Other acquired intangible assets estimated useful lives |  |  | 20 years |  |  |

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- Definition Amount classified as goodwill attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=109222160&loc=d3e1107-107759 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=109222160&loc=SL51721533-107759 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2510-110228 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Percentage of voting equity interests acquired in a business combination achieved in stages, excluding equity interests in the acquiree held by the acquirer immediately before the acquisition date. + References No definition available. + Details
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