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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Disaggregate of Revenue by Reportable Segment and Revenue Category | The following table disaggregates revenue by reportable segment and revenue category for the year ended December 31, 2023:
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |
Subscriber Solutions |  | $ | 263,192 |  |  | $ | 34,516 |  |  | $ | 297,708 |
Access & Aggregation Solutions |  |  | 304,074 |  |  |  | 54,344 |  |  |  | 358,418 |
Optical Networking Solutions |  |  | 407,123 |  |  |  | 85,851 |  |  |  | 492,974 |
Total |  | $ | 974,389 |  |  | $ | 174,711 |  |  | $ | 1,149,100 |
The following table disaggregates revenue by reportable segment and revenue category for the year ended December 31, 2022:
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |
Subscriber Solutions |  | $ | 364,238 |  |  | $ | 26,216 |  |  | $ | 390,454 |
Access & Aggregation Solutions |  |  | 326,934 |  |  |  | 47,068 |  |  |  | 374,002 |
Optical Networking Solutions |  |  | 225,621 |  |  |  | 35,459 |  |  |  | 261,080 |
Total |  | $ | 916,793 |  |  | $ | 108,743 |  |  | $ | 1,025,536 |
The following table disaggregates revenue by reportable segment and revenue category for the year ended December 31, 2021:
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |
Subscriber Solutions |  | $ | 189,825 |  |  | $ | 16,385 |  |  | $ | 206,210 |
Access & Aggregation Solutions |  |  | 309,009 |  |  |  | 47,785 |  |  |  | 356,794 |
Optical Networking Solutions |  |  | — |  |  |  | — |  |  |  | — |
Total |  | $ | 498,834 |  |  | $ | 64,170 |  |  | $ | 563,004 |
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:
(In thousands) |  | December 31, 2023 |  |  | December 31, 2022 |
Accounts receivable |  | $ | 216,445 |  |  | $ | 279,435 |
Contract assets(1) |  | $ | 691 |  |  | $ | 1,852 |
Unearned revenue |  | $ | 46,731 |  |  | $ | 41,193 |
Non-current unearned revenue |  | $ | 25,109 |  |  | $ | 19,239 |
(1) Included in other receivables on the 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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- References No definition available. + Details
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