XML 33 R50.htm IDEA: XBRL DOCUMENT v3.20.1
CONCENTRATIONS (Tables)
12 Months Ended
Dec. 31, 2019
Concentrations Tables Abstract  
Greater than 10% of revenues from sales

In Thousands of US Dollars
Description   2019     2018     2017  
Customer A   $ 23     $ 34     $ 62  
Customer C   $ 36     $ 126     $ 90