XML 44 R28.htm IDEA: XBRL DOCUMENT v3.20.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Minimum ownership interest retained during start-up phase (as a percent)     50.00%  
Maximum threshold percentage of equity ownership interest     50.00%  
Maximum threshold ownership percentage for equity method accounting of investment     20.00%  
Sales Revenue, Net [Member] | Maximum        
Concentration risk percentage 1.00% 1.00% 1.00% 1.00%