Quarterly report pursuant to Section 13 or 15(d)

Customer Concentration (Tables)

v3.19.1
Customer Concentration (Tables)
 3 Months Ended
Mar. 31, 2019
Risks and Uncertainties [Abstract]  
Schedule of Revenue and Accounts Receivable by Major Customers The following table shows customers with revenues of 10% or greater of total revenues from external customers and customers with accounts receivable balances of 10% or greater of total accounts receivable from external customers:
 
 
Percentage of Total Revenues from External Customers
 
Percentage of Accounts Receivable from External Customers
 
 
Three Months Ended March 31,
 
March 31,
 
December 31,
 
 
2019
 
2018
 
2019
 
2018
Customer A
 
20%
 
17%
 
18%
 
21%
Customer B
 
12%
 
12%
 
11%
 
14%
Customer C
 
12%
 
24%
 
12%
 
18%
Customer D
 
14%
 
*
 
*
 
*
Customer E
 
*
 
—%
 
11%
 
—%
Customer F
 
*
 
*
 
*
 
10%

 
* Less than 10%