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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2025
Revenue from Contract with Customer [Abstract] |
Disaggregate of Revenue by Reportable Segment and Revenue Category | The following tables disaggregate revenue by reportable segment and revenue category:
|  | Three Months Ended |
|  | March 31, 2025 |  |  | March 31, 2024 |
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |  |  | Network Solutions |  |  | Services & Support |  |  | Total |
Subscriber Solutions |  | $ | 71,748 |  |  | $ | 8,662 |  |  | $ | 80,410 |  |  | $ | 60,369 |  |  | $ | 9,399 |  |  | $ | 69,767 |
Access & Aggregation Solutions |  |  | 75,847 |  |  |  | 13,289 |  |  |  | 89,136 |  |  |  | 67,777 |  |  |  | 13,535 |  |  |  | 81,312 |
Optical Networking Solutions |  |  | 54,622 |  |  |  | 23,576 |  |  |  | 78,198 |  |  |  | 53,127 |  |  |  | 21,966 |  |  |  | 75,094 |
Total |  | $ | 202,217 |  |  | $ | 45,527 |  |  | $ | 247,744 |  |  | $ | 181,273 |  |  | $ | 44,900 |  |  | $ | 226,173 |
Information about Receivable, Contract Assets, and Unearned Revenue from Contracts with Customers | The following table provides information about accounts receivable, contract assets and unearned revenue from contracts with customers:
|  | As of |  |  | As of |
(In thousands) |  | March 31, 2025 |  |  | December 31, 2024 |
Accounts receivable, net |  | $ | 166,519 |  |  | $ | 178,030 |
Contract assets(1) |  | $ | 431 |  |  | $ | 631 |
Unearned revenue |  | $ | 66,459 |  |  | $ | 52,701 |
Non-current unearned revenue |  | $ | 24,082 |  |  | $ | 22,065 |
(1) Included in other receivables on the Condensed Consolidated Balance Sheets.

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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