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Revenue - Disaggregate of Revenue by Reportable Segment and Revenue Category (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | $ 340,709 | $ 138,081 | $ 667,265 | $ 408,846
Subscriber Solutions |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 133,675 | 46,867 | 270,147 | 152,489
Access & Aggregation Solutions [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 88,189 | 91,214 | 278,273 | 256,357
Optical Networking Solutions |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 118,845 |  | 118,845 |
Network Solutions [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 304,940 | 120,767 | 599,306 | 360,025
Network Solutions [Member] | Subscriber Solutions |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 125,338 | 42,704 | 252,899 | 140,257
Network Solutions [Member] | Access & Aggregation Solutions [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 76,591 | 78,063 | 243,396 | 219,768
Network Solutions [Member] | Optical Networking Solutions |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 103,011 |  | 103,011 |
Services & Support [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 35,769 | 17,314 | 67,959 | 48,821
Services & Support [Member] | Subscriber Solutions |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 8,337 | 4,163 | 17,248 | 12,232
Services & Support [Member] | Access & Aggregation Solutions [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | 11,598 | $ 13,151 | 34,877 | $ 36,589
Services & Support [Member] | Optical Networking Solutions |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenue | $ 15,834 |  | $ 15,834 |

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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