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Revenue from Contracts with Customers
 12 Months Ended
Dec. 31, 2022
Revenue from Contract with Customer [Abstract]  
Revenue from Contracts with Customers Revenue from Contracts with CustomersThe Company develops, markets and sells a broadband platform and managed services, and there are no segment managers who are held accountable for operations, operating results and plans for levels or components below the Company unit level. Accordingly, the Company is considered to be in a single reporting segment and operating unit structure. The Company’s chief operating decision maker is the Company’s Chief Executive Officer, who reviews financial information presented on a Company-wide basis, for purposes of allocating resources and evaluating financial performance.
Geographic Information:
The following is a summary of revenue disaggregated by geographic region based upon the location of the customers (in thousands):
Years Ended December 31,
202220212020
United States$786,802 $565,964 $473,779 
Americas excluding U.S.41,892 45,719 27,802 
Europe26,916 45,879 22,925 
Middle East & Africa10,885 19,018 14,075 
Asia Pacific1,332 2,814 2,658 
$867,827 $679,394 $541,239 
The Company’s property and equipment, net of accumulated depreciation, are located in the following geographical areas (in thousands):
December 31,
2022 2021
United States$21,785 $19,900 
China3,220 1,840 
India829 43 
$25,834 $21,783 
Contract Asset
The primary contract asset is revenue recognized on professional services contracts where the services are transferred to the customer over time, which has yet to be billed, and is classified to remaining performance obligations within accounts receivable. Amounts are billed in accordance with the agreed-upon contractual terms. The balance as of December 31, 2022 was $2.3 million of which the Company expects to bill 81% of the balance during 2023. The balance as of December 31, 2021 was $1.7 million of which $0.3 million remained in the Company's Consolidated Balance Sheet at December 31, 2022. The increase in the contract asset was driven by the timing and volume of professional services contracts.
Contract Liability
Deferred revenue was $58.6 million and $49.5 million as of December 31, 2022 and 2021, respectively. The increase in deferred revenue of $9.1 million is primarily driven by cash payments received or due in advance of satisfying the Company's performance obligations during the year being greater than the $26.8 million of revenue recognized that was included in the deferred revenue balance at the beginning of the year.
Revenue allocated to remaining performance obligations represent contract revenue that has not yet been recognized, which includes deferred revenue and amounts that will be invoiced and recognized as revenue in future periods. This amount was $199.0 million as of December 31, 2022, and the Company expects to recognize 35% of such revenue over the next 12 months and the remainder thereafter.
Contract Costs
The Company capitalizes certain sales commissions related primarily to multi-year subscriptions and extended warranty support for which the expected amortization period is greater than one year. As of December 31, 2022 and 2021, the unamortized balance of deferred commissions was $11.2 million and $7.4 million, respectively. For the year ended December 31, 2022 the amount of amortization was $4.0 million, compared to $1.4 million for the year ended December 31, 2021. There was no impairment loss in relation to the costs capitalized for either period.
Concentration of Customer Risk
No customer accounted for more than 10% of the Company’s revenue for the years ended December 31, 2022 and 2021. Lumen Technologies, Inc. (formerly CenturyLink, Inc.), the Company’s only greater-than-10%-of-revenue customer, represented 11% of revenue for the year ended December 31, 2020.
One customer represented 11% of the Company’s accounts receivable as of December 31, 2022. Another customer represented 12% of the Company’s accounts receivable as of December 31, 2021.