XML 81 R66.htm IDEA: XBRL DOCUMENT v3.20.1
Geographic areas and major customers (Sales By Geographic Region) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales attributable based on geographic location [1] $ 105,240 $ 133,753 $ 125,690
North America [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales attributable based on geographic location 77,161 108,024 100,434
Europe [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales attributable based on geographic location 20,956 21,038 20,156
Asia Pacific [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales attributable based on geographic location $ 7,123 $ 4,691 $ 5,100
[1] Including sales to related parties in the amount of US$ 1,275 thousand, US$ 1,063 thousand and US$ 0 in 2017, 2018 and 2019, respectively.