XML 70 R57.htm IDEA: XBRL DOCUMENT v3.6.0.2
BUSINESS SEGMENTS AND MAJOR CUSTOMERS - Revenue derived from major customers (Details 2) - Sales revenue
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Customer A      
Revenue, Major Customer [Line Items]      
Concentration risk, percentage 18.00% 3.00% 10.00%
Customer B      
Revenue, Major Customer [Line Items]      
Concentration risk, percentage 18.00% 6.00% 1.00%
Customer C      
Revenue, Major Customer [Line Items]      
Concentration risk, percentage 12.00% 2.00% 5.00%
Customer D      
Revenue, Major Customer [Line Items]      
Concentration risk, percentage 6.00% 9.00% 24.00%
Customer E      
Revenue, Major Customer [Line Items]      
Concentration risk, percentage 5.00% 10.00% 2.00%