Derivative Instruments - Summary of Derivative Instrument Positions for Future Production Periods (Detail)	12 Months Ended
	Dec. 31, 2016 MMBTU $ / MMBTU $ / gal bbl gal
Natural Gas Derivatives Production Period January 2017 – December 2017 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	10,000
Weighted Average Price ($/MMBtu)	2.98
Natural Gas Derivatives Production Period March 2017 – December 2017 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	10,000
Weighted Average Price ($/MMBtu)	3.21
NGL Derivatives Production Period January 2017 – December 2017 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (Gal/d) | gal	84,000
Weighted Average Price ($/Gal) | $ / gal	0.60
Put Option [Member] | Natural Gas Derivatives Production Period January 2017 – December 2017 [Member] | Put Purchased [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	130,000
Weighted Average Price ($/MMBtu)	2.85
Put Option [Member] | Natural Gas Derivatives Production Period January 2017 – December 2017 [Member] | Put Purchased [Member] | Floor Three [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	30,000
Weighted Average Price ($/MMBtu)	2.75
Put Option [Member] | Natural Gas Derivatives Production Period January 2017 – December 2017 [Member] | Put Sold [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	30,000
Weighted Average Price ($/MMBtu)	2.25
Put Option [Member] | Natural Gas Derivatives Production Period January 2017 – December 2018 [Member] | Put Purchased [Member] | Floor One [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	20,000
Weighted Average Price ($/MMBtu)	2.90
Put Option [Member] | Natural Gas Derivatives Production Period January 2018 – December 2018 [Member] | Put Purchased [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	80,000
Weighted Average Price ($/MMBtu)	2.90
Put Option [Member] | Natural Gas Derivatives Production Period January 2018 – December 2018 [Member] | Put Purchased [Member] | Floor Two [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	40,000
Weighted Average Price ($/MMBtu)	2.75
Put Option [Member] | Natural Gas Derivatives Production Period January 2018 – December 2018 [Member] | Put Sold [Member] | Floor Three [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	80,000
Weighted Average Price ($/MMBtu)	2.12
Put Option [Member] | Natural Gas Derivatives Production Period April 2017 – March 2019 [Member] | Put Purchased [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	30,000
Weighted Average Price ($/MMBtu)	3.00
Put Option [Member] | Natural Gas Derivatives Production Period April 2017 – March 2019 [Member] | Put Sold [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	30,000
Weighted Average Price ($/MMBtu)	2.20
Put Option [Member] | Natural Gas Derivatives Production Period October 2017 – December 2018 [Member] | Put Purchased [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	20,000
Weighted Average Price ($/MMBtu)	2.90
Put Option [Member] | Natural Gas Derivatives Production Period October 2017 – December 2018 [Member] | Put Sold [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	20,000
Weighted Average Price ($/MMBtu)	2.20
Put Option [Member] | Oil Derivatives Production Period January 2017 – September 2017 [Member] | Put Purchased [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	46.00
Volume (Bbls/d) | bbl	2,000
Put Option [Member] | Oil Derivatives Production Period January 2017 – September 2017 [Member] | Put Sold [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	38.00
Volume (Bbls/d) | bbl	2,000
Put Option [Member] | Oil Derivatives Production Period January 2017 – December 2017 [Member] | Put Purchased [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	46.00
Volume (Bbls/d) | bbl	2,000
Put Option [Member] | Oil Derivatives Production Period January 2017 – December 2017 [Member] | Put Sold [Member] | Floor [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	38.00
Volume (Bbls/d) | bbl	2,000
Call Option [Member] | Natural Gas Derivatives Production Period January 2017 – December 2017 [Member] | Put Sold [Member] | Ceiling One [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	130,000
Weighted Average Price ($/MMBtu)	3.24
Call Option [Member] | Natural Gas Derivatives Production Period January 2017 – December 2017 [Member] | Put Sold [Member] | Ceiling Four [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	30,000
Weighted Average Price ($/MMBtu)	3.57
Call Option [Member] | Natural Gas Derivatives Production Period January 2017 – December 2018 [Member] | Put Sold [Member] | Ceiling Two [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	20,000
Weighted Average Price ($/MMBtu)	3.25
Call Option [Member] | Natural Gas Derivatives Production Period January 2018 – December 2018 [Member] | Put Sold [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	40,000
Weighted Average Price ($/MMBtu)	3.75
Call Option [Member] | Natural Gas Derivatives Production Period January 2018 – December 2018 [Member] | Put Sold [Member] | Ceiling Three [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	40,000
Weighted Average Price ($/MMBtu)	3.27
Call Option [Member] | Natural Gas Derivatives Production Period January 2018 – December 2018 [Member] | Put Sold [Member] | Ceiling [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	80,000
Weighted Average Price ($/MMBtu)	3.31
Call Option [Member] | Natural Gas Derivatives Production Period April 2017 – March 2019 [Member] | Put Sold [Member] | Ceiling [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	30,000
Weighted Average Price ($/MMBtu)	3.40
Call Option [Member] | Natural Gas Derivatives Production Period October 2017 – December 2018 [Member] | Put Sold [Member] | Ceiling [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	20,000
Weighted Average Price ($/MMBtu)	3.50
Call Option [Member] | Natural Gas Derivatives Production Period January 2019 – December 2019 [Member] | Put Sold [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	10,000
Weighted Average Price ($/MMBtu)	4.75
Call Option [Member] | Oil Derivatives Production Period January 2017 – September 2017 [Member] | Put Sold [Member] | Ceiling [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	59.50
Volume (Bbls/d) | bbl	2,000
Call Option [Member] | Oil Derivatives Production Period January 2017 – December 2017 [Member] | Put Sold [Member] | Ceiling [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	60.00
Volume (Bbls/d) | bbl	2,000
Call Option [Member] | Oil Derivatives Production Period January 2018 – December 2018 [Member] | Put Sold [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	50.00
Volume (Bbls/d) | bbl	1,000
TCO [Member] | Columbia [Member] | Natural Gas Derivatives Production Period January 2017 – December 2017 [Member] | Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Volume (MMBtu/d) | MMBTU	20,000
TCO [Member] | COLOMBIA | Natural Gas Derivatives Production Period January 2017 – December 2017 [Member] | Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Weighted Average Price ($/MMBtu)	(0.19)