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Revenue | 9 Months Ended
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Sep. 30, 2018
Revenue From Contract With Customer [Abstract] |
Revenue | 3. REVENUE Revenue is measured based on the consideration we expect to receive in exchange for transferring goods or providing services to a customer and as performance obligations under the terms of the contract are satisfied. Generally, this occurs with the transfer of control of a product or service to the customer. For transactions where there are multiple performance obligations, we account for individual products and services separately if they are distinct (if a product or service is separately identifiable from other items and if a customer can benefit from it on its own or with other resources that are readily available to the customer). The consideration, including any discounts, is allocated between separate products and services based on their stand-alone selling prices. The stand-alone selling prices are determined based on the prices at which we sell the separate products and services and are allocated based on each item’s relative value to the total value of the products and services in the arrangement. For items that are not sold separately, we estimate stand-alone selling prices primarily using the “expected cost plus a margin” approach. Payment terms are typically 30 days. Shipping fees are recorded as revenue and the related cost is included in cost of sales. Sales, value-added, and other taxes collected concurrently with revenue-producing activities are excluded from revenue. Costs of obtaining a contract are capitalized and amortized over the period that the related revenue is recognized if greater than one year. We have elected to apply the practical expedient related to the incremental costs of obtaining contracts and recognize those costs as an expense when incurred if the amortization period of the assets is one year or less. These costs are included in selling, general and administrative expenses. Capitalized costs with an amortization period greater than one year were immaterial. The following is a description of the principal activities from which we generate our revenue by reportable segment. Network Solutions Segment Network Solutions includes hardware products and next-generation virtualized solutions used in service provider or business networks, as well as prior generation products. Hardware The majority of the revenue from this segment is from hardware sales and is recognized when control is transferred to our customers, which is generally when we ship the products. Shipping terms are generally FOB shipping point. Revenue is recorded net of estimated discounts and rebates using historical trends. Customers are typically invoiced when control is transferred and revenue is recognized. Our products generally include assurance-based warranties of 90 days to five years for product defects, which are accrued at the time revenue is recognized. In certain transactions, we are also the lessor in sales-type lease arrangements for network equipment that have terms of 18 months to five years. These arrangements typically include network equipment, network implementation services and maintenance services. Product revenue for these leases is generally recorded when we transfer control of the product to our customers. Revenue for network implementation and maintenance services is recognized as described below. Customers are typically invoiced and pay in equal installments over the lease term. In relation to these lease agreements, during the three months ended September 30, 2018 and 2017, we recognized revenue of $4.2 million and $8.4 million, respectively, and during the nine months ended September 30, 2018 and 2017 we recognized revenue of $10.5 million and $15.4 million, respectively. Services & Support Segment To complement our Network Solutions segment, we offer a complete portfolio of maintenance, network implementation, and solutions integration and managed services, which include hosted cloud services and subscription services. Maintenance Our maintenance service periods range from one month to five years. Customers are typically invoiced and pay for maintenance services at the beginning of the maintenance period. We recognize revenue for maintenance services on a straight-line basis over the maintenance period in services revenue as our customers benefit evenly throughout the contract term and deferred revenues are recorded in current and non-current unearned revenue. Network Implementation We recognize revenue for network implementation, which primarily consists of engineering, execution and enablement services, at a point in time when each performance obligation is complete. If we have recognized revenue, but have not billed the customer, the right to consideration is recognized as a contract asset that is included in other receivables in the Consolidated Balance Sheet. The contract asset is transferred to accounts receivable when the completed performance obligation is invoiced to the customer. As of September 30, 2018, we did not have any significant performance obligations related to customer contracts that had an original expected duration of one year or more, other than maintenance services, which are satisfied over time. The following table provides information about receivables, contract assets, and unearned revenue from contracts with customers:
(In thousands) |  | September 30, 2018 |  |  | January 1, 2018 |
Accounts receivable |  | $ | 101,865 |  |  | $ | 144,150 |
Contract assets |  | $ | 4,564 |  |  | $ | 374 |
Unearned revenue |  | $ | 17,004 |  |  | $ | 13,070 |
Non-current unearned revenue |  | $ | 3,846 |  |  | $ | 4,556 |
The decrease in accounts receivable is due to the collection of customer specific payment terms that became due in the first quarter of 2018. The increase in the contract asset balance for the nine months ended September 30, 2018 is primarily attributable to revenue recognized that has not yet been billed to the customer during the period. The increase in the unearned revenue balance as of nine months ended September 30, 2018 is primarily attributable to cash payments received or due in advance of satisfying our performance obligations, offset by $8.9 million of revenues recognized that were included in the unearned revenue balance as of December 31, 2017. The following table disaggregates our revenue by major source for the three months ended September 30, 2018:
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |
Access & Aggregation |  | $ | 76,046 |  |  | $ | 15,855 |  |  | $ | 91,901 |
Customer Devices |  |  | 37,313 |  |  |  | 1,239 |  |  |  | 38,552 |
Traditional & Other Products |  |  | 7,684 |  |  |  | 2,198 |  |  |  | 9,882 |
Total |  | $ | 121,043 |  |  | $ | 19,292 |  |  | $ | 140,335 |
The following table disaggregates our revenue by major source for the nine months ended September 30, 2018:
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |
Access & Aggregation |  | $ | 220,653 |  |  | $ | 37,670 |  |  | $ | 258,323 |
Customer Devices |  |  | 99,396 |  |  |  | 3,817 |  |  |  | 103,213 |
Traditional & Other Products |  |  | 21,310 |  |  |  | 6,343 |  |  |  | 27,653 |
Total |  | $ | 341,359 |  |  | $ | 47,830 |  |  | $ | 389,189 |

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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