Annual report pursuant to Section 13 and 15(d)

Derivative Instruments - Narrative (Details)

v3.10.0.1
Derivative Instruments - Narrative (Details)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2018
USD ($)
$ / MMBTU
bbl
Dec. 31, 2018
MMBTU
$ / MMBTU
Derivative [Line Items]    
Derivative, extension option term   12 months
Percentage of production under fixed price swaps   78.00%
Fixed Price Swap 2019    
Derivative [Line Items]    
Daily Volume (MMBtu/day) | MMBTU   100,000
Weighted average price of derivative swap (usd per MMBtu or Bbls) | $ / MMBTU 3.05 3.05
NYMEX West Texas Intermediate and ARGUS LLS - 2019    
Derivative [Line Items]    
Daily Volume (Bbls/day) | bbl 5,000  
Loss on derivative | $ $ 0.4