XML 75 R71.htm IDEA: XBRL DOCUMENT v3.20.1
Note 13 - Customer and Geographic Information - Revenue Percentage by Major Customers (Details) - Customer Concentration Risk [Member]
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Revenue Benchmark [Member] | Customer A [Member]    
Revenue Percentage by Major Customer 31.00% 37.00%
Accounts Receivable [Member] | Customer A [Member]    
Revenue Percentage by Major Customer 27.00% 35.00%
Accounts Receivable [Member] | Customer B [Member]    
Revenue Percentage by Major Customer 14.00% 9.00%
Accounts Receivable [Member] | Customer C [Member]    
Revenue Percentage by Major Customer 12.00% 21.00% [1]
[1] represents less than 10%