|6 Months Ended|
Jun. 30, 2019
|Revenue from Contract with Customer [Abstract]|
|Revenue, classified by the major geographic areas in which our customers are located||
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:
Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef