XML 67 R52.htm IDEA: XBRL DOCUMENT v3.8.0.1
Selected Statement of Operations Data (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Revenues $ 18,062 $ 18,052 $ 20,928
Product line "A" [Member]      
Revenues 14,722 14,544 16,567
Product line "B" [Member]      
Revenues $ 3,340 $ 3,508 $ 4,361