Annual report pursuant to Section 13 and 15(d)

ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES. (Details 3)

v3.8.0.1
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES. (Details 3)
12 Months Ended
Dec. 31, 2017
Building [Member]  
Estimated useful lives P40Y
Facilities and plant equipment [Member] | Minimum [Member]  
Estimated useful lives P10Y
Facilities and plant equipment [Member] | Maximum [Member]  
Estimated useful lives P25Y
Other equipment, vehicles and furniture [Member] | Minimum [Member]  
Estimated useful lives P5Y
Other equipment, vehicles and furniture [Member] | Maximum [Member]  
Estimated useful lives P10Y