NOTE 3.          REVENUE

Adoption of ASC 606, “Revenue from Contracts with Customers”. On January 1, 2018, and the Company adopted ASC 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2017. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under ASC 605.

There was no material impact on the Company’s financial statements as a result of adopting ASC 606 for the nine months ended September 30, 2018 and 2017, or the twelve months ended December 31, 2017.

The following tables present our revenues disaggregated by revenue source (in thousands, unaudited).

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 more than 10% 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: