Quarterly report pursuant to Section 13 or 15(d)

COMMITTMENTS AND CONTINGENCIES (Narrative) (Details)

v3.19.1
COMMITTMENTS AND CONTINGENCIES (Narrative) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 29, 2016
complaint
defendant
Feb. 09, 2016
complaint
defendant
Mar. 11, 1997
Mar. 31, 2019
USD ($)
well
Mar. 31, 2018
USD ($)
Jul. 29, 2016
complaint
Dec. 31, 1997
USD ($)
well
Commitments [Line Items]              
Plugging and abandonment trust on the WCBB properties       $ 3,100      
Firm transportation contracted with third parties       66,000      
Number of claims filed (in claims) | complaint           2  
Judicial District Court for the Parish of Cameron              
Commitments [Line Items]              
Number of claims filed (in claims) | complaint   1          
Number of defendants (in defendants) | defendant   26          
Judicial District Court for the Parish of Vermillion              
Commitments [Line Items]              
Number of claims filed (in claims) | complaint 1            
Number of defendants (in defendants) | defendant 40            
Transportation commitment              
Commitments [Line Items]              
Firm transportation contracted with third parties       3,728,767      
Future minimum commitments       191,493      
Loss on long-term purchase commitment | Muskie Proppant LLC              
Commitments [Line Items]              
Non-utilization fees, accrued damages year to date       $ 300 $ 900    
WCBB              
Commitments [Line Items]              
Remaining interest in oil and gas property acquisition, percent             50.00%
Payments of seller's obligation to contribute             $ 18
Minimum number of wells to be plugged (in wells) | well             20
Tenure of minimum wells to be plugged (in years)     20 years        
Number of wells plugged (in wells) | well       555