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Revenue
 12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Revenue

Note 4 - Revenue

The following is a description of the principal activities from which revenue is generated by reportable segment:

Network Solutions - Includes hardware products and software-defined next-generation virtualized solutions used in service provider or business networks, as well as prior generation products.

Services & Support - Includes maintenance, network implementation, solutions integration and managed services, which include hosted cloud services and subscription services.

Revenue by Category

 

In addition to reportable segments, revenue is also reported for the following three categories – Access & Aggregation, Subscriber Solutions & Experience and Traditional & Other Products.

 

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

 

Access & Aggregation

 

$

300,343

 

 

$

43,853

 

 

$

344,196

 

Subscriber Solutions & Experience

 

 

189,121

 

 

 

10,500

 

 

 

199,621

 

Traditional & Other Products

 

 

9,370

 

 

 

9,817

 

 

 

19,187

 

Total

 

$

498,834

 

 

$

64,170

 

 

$

563,004

 

 

The following table disaggregates revenue by reportable segment and revenue category for the year ended December 31, 2020:

 

(In thousands)

 

Network Solutions

 

 

Services & Support

 

 

Total

 

Access & Aggregation

 

$

262,578

 

 

$

50,560

 

 

$

313,138

 

Subscriber Solutions & Experience

 

 

161,824

 

 

 

9,263

 

 

 

171,087

 

Traditional & Other Products

 

 

13,613

 

 

 

8,672

 

 

 

22,285

 

Total

 

$

438,015

 

 

$

68,495

 

 

$

506,510

 

 

The following table disaggregates revenue by reportable segment and revenue category for the year ended December 31, 2019:

 

(In thousands)

 

Network Solutions

 

 

Services & Support

 

 

Total

 

Access & Aggregation

 

$

289,980

 

 

$

58,894

 

 

$

348,874

 

Subscriber Solutions & Experience

 

 

144,651

 

 

 

8,269

 

 

 

152,920

 

Traditional & Other Products

 

 

20,595

 

 

 

7,672

 

 

 

28,267

 

Total

 

$

455,226

 

 

$

74,835

 

 

$

530,061

 

 

The aggregate amount of transaction price allocated to remaining performance obligations that have not been satisfied as of December 31, 2021 related to contractual maintenance agreements, contractual SaaS and subscription services, and hardware contracts that exceed one year in duration amounted to $101.1 million, with approximately 74.6% expected to be recognized over the next 12 months and the remainder recognized thereafter. The majority of the Company's remaining performance obligations at December 31, 2021 are related to contracts or orders that have an original expected duration of one year or less, for which the Company is electing to utilize the practical expedient available within the guidance, and are excluded from the transaction price related to these future obligations. The Company will generally satisfy the remaining performance obligations as we transfer control of the products ordered or services to our customers, excluding maintenance services, which are satisfied over time.

 

The following table provides information about accounts receivable, contract assets and unearned revenue from contracts with customers:

 

(In thousands)

 

December 31, 2021

 

 

December 31, 2020

 

Accounts receivable

 

$

158,742

 

 

$

98,827

 

Contract assets(1)

 

$

464

 

 

$

63

 

Unearned revenue

 

$

17,737

 

 

$

14,092

 

Non-current unearned revenue

 

$

9,271

 

 

$

6,888

 

(1) Included in other receivables on the Consolidated Balance Sheets.

Of the outstanding unearned revenue balance as of December 31, 2020, 2019 and 2018, $11.2 million, $11.0 million and $12.7 million were recognized as revenue during the years ended December 31, 2021, 2020 and 2019, respectively.