Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS (Details Textual)

v3.8.0.1
DERIVATIVE FINANCIAL INSTRUMENTS (Details Textual)
Jan. 01, 2018
$ / Rate
Oct. 01, 2017
$ / Rate
Sep. 30, 2017
Disclosure of Derivative Financial Instruments [Line Items]      
Number Of Barrels Per Day     1,000
Subsequent Event [Member] | Put Option [Member]      
Disclosure of Derivative Financial Instruments [Line Items]      
Derivative, Price Risk Option Strike Price 49.00 49.00  
Subsequent Event [Member] | Call Option [Member]      
Disclosure of Derivative Financial Instruments [Line Items]      
Derivative, Price Risk Option Strike Price 54.60 55.35