Quarterly report pursuant to Section 13 or 15(d)

SUBSEQUENT EVENTS (Details)

v3.19.2
SUBSEQUENT EVENTS (Details)
$ / shares in Units, a in Thousands
6 Months Ended
Jul. 01, 2019
USD ($)
well
a
$ / shares
shares
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Subsequent Event [Line Items]      
Cash consideration   $ 19,438,000 $ 48,975,000
VEN Bakken LLC | Subsequent Event      
Subsequent Event [Line Items]      
Number of net PDP wells acquired (in wells) | well 87.8    
Number of net PDNP wells acquired (in wells) | well 4.1    
Net mineral acres acquired (in acres) | a 18    
Cash consideration $ 165,000,000.0    
Unadjusted cash consideration 170,100,000    
Acquisition deposit 31,000,000.0    
Adjustment to consideration transferred $ 5,100,000    
Number of shares issued (in shares) | shares 5,602,147    
Value of shares transferred $ 11,700,000    
Share price (in dollars per share) | $ / shares $ 2.09    
VEN Bakken LLC | Subsequent Event | Senior Unsecured Notes      
Subsequent Event [Line Items]      
Interest rate 6.00%    
Principal amount of senior unsecured notes $ 130,000,000.0