Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Narrative (Details)

v3.6.0.2
Subsequent Events - Narrative (Details) - Subsequent event
Feb. 14, 2017
MMBTU / d
bbl
$ / MMBTU
NYMEX Natural Gas 2017 Fixed Price Swap  
Derivative [Line Items]  
Notional quantity (MMBtu/day) | MMBTU / d 23,000
Weighted average price of derivative swap (usd per share) 3.44
Mont Belvieu Propane 2017 Fixed Price Swap  
Derivative [Line Items]  
Notional quantity (MMBtu/day) | bbl 1,000
Weighted average price of derivative swap (usd per share) 28.56
NYMEX Natural Gas 2018 Fixed Price Swap  
Derivative [Line Items]  
Notional quantity (MMBtu/day) | MMBTU / d 87,000
Weighted average price of derivative swap (usd per share) 3.19
NYMEX Henry Hub 2017 Natural Gas Swap  
Derivative [Line Items]  
Notional quantity (MMBtu/day) | MMBTU / d 38,000
NYMEX Henry Hub 2018 Natural Gas Swap  
Derivative [Line Items]  
Notional quantity (MMBtu/day) | MMBTU / d 12,000
Fixed Price Swap 2017 | NYMEX Henry Hub to NPGL MC  
Derivative [Line Items]  
Weighted average price of derivative swap (usd per share) 0.26
Fixed Price Swap 2018 | NYMEX Henry Hub to NPGL MC  
Derivative [Line Items]  
Weighted average price of derivative swap (usd per share) 0.26