Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS (Details Textual)

v3.19.1
DERIVATIVE FINANCIAL INSTRUMENTS (Details Textual)
Dec. 31, 2020
bbl
Dec. 31, 2019
bbl
Mar. 31, 2019
bbl
Dec. 31, 2018
$ / BarrelofOilEquivalent
Oct. 27, 2017
bbl
Sep. 25, 2017
bbl
Number Of Barrels Per Day | bbl     3,500     1,000
Addititional Derivative Contracts [Member]            
Number Of Barrels Per Day | bbl         1,000  
Addititional Derivative Contracts [Member] | Scenario, Forecast [Member]            
Derivative, Nonmonetary Notional Amount | bbl 2,000 2,000        
Call Option [Member]            
Derivative, Price Risk Option Strike Price       54.60    
Call Option [Member] | Addititional Derivative Contracts [Member]            
Derivative, Price Risk Option Strike Price       54.80    
Put Option [Member]            
Derivative, Price Risk Option Strike Price       49.00    
Put Option [Member] | Addititional Derivative Contracts [Member]            
Derivative, Price Risk Option Strike Price       51.00