REVENUE |
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| REVENUE |
3. REVENUE The following tables present our revenues disaggregated by revenue source (in thousands). Sales and usage-based taxes are excluded from revenues. No sales to an individual customer or in a country other than the United States accounted for 10% or more of the sales for the periods listed on the following table. Revenue, classified by the major geographic areas in which our customers are located, was as follows:
Revenue from external customers, classified by significant product and service offerings, was as follows:
Deferred revenue recognized for the year ended December 31, 2021 and 2020 was $187.3 million and $173.2 million, respectively. Changes in unearned revenue were as follows:
Revenue allocated to remaining performance obligations represents contracted revenue that has not yet been recognized (“contracted not recognized revenue”), which includes both unearned revenue and revenue that will be billed and recognized in future periods. The Company has no material contracted not recognized revenue as of December 31, 2021 or December 31, 2020. At December 31, 2021 and December 31, 2020, the Company had long-term unearned revenue of $23.5 million and $18.0 million, respectively. Unearned short-term revenue is recognized over the next 12-month period. The majority of unearned long-term revenue is recognized over a period of five years or less with immaterial amounts recognized through 2032. |
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