|9 Months Ended
Sep. 30, 2021
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:
See Note 8. Unearned Revenue, for disclosures related to our unearned revenue balances.
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.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef