Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Commodity Derivative Positions

The following table sets forth our commodity derivative positions as of March 31, 2014:

		Average
		Volume Per	Weighted Average Price				Fair Value
	Instrument	Day	Floor/Swap		Ceiling		Asset		Liability
Crude Oil:		(barrels)	($/barrel)
Second quarter 2014	Collars	2,500	$	92.00	$	99.46	$	—	$	740
Third quarter 2014	Collars	2,000	$	90.00	94.33		—		827
Fourth quarter 2014	Collars	2,000	$	90.00	94.33		—		420
First quarter 2015	Collars	4,000	$	87.50	94.66		—		278
Second quarter 2015	Collars	4,000	$	87.50	94.66		276		—
Third quarter 2015	Collars	3,000	$	86.67	94.73		507		—
Fourth quarter 2015	Collars	3,000	$	86.67	94.73		766		—
Second quarter 2014	Swaps	8,500	$	94.00			—		4,984
Third quarter 2014	Swaps	10,000	$	93.21			342		4,410
Fourth quarter 2014	Swaps	10,000	$	93.21			709		2,417
First quarter 2015	Swaps	7,000	$	90.79			—		1,440
Second quarter 2015	Swaps	7,000	$	90.79			—		447
Third quarter 2015	Swaps	6,000	$	90.45			150		—
Fourth quarter 2015	Swaps	6,000	$	90.45			722		—
First quarter 2015	Swaptions	1,000	$	88.00			—		535
Second quarter 2015	Swaptions	1,000	$	88.00			—		534
Third quarter 2015	Swaptions	1,000	$	88.00			—		534
Fourth quarter 2015	Swaptions	1,000	$	88.00			—		534
Natural Gas:		(in MMBtu)	($/MMBtu)
Second quarter 2014	Swaps	15,000	$	4.10			—		474
Third quarter 2014	Swaps	15,000	$	4.10			—		450
Fourth quarter 2014	Swaps	5,000	$	4.50			—		2
First quarter 2015	Swaps	5,000	$	4.50			—		49
Settlements to be paid in subsequent period							—		1,761

Impact of Derivative Activities on Condensed Consolidated Statements of Income

The impact of our derivatives activities on income is included in the Derivatives caption on our Condensed Consolidated Statements of Operations. The following table summarizes the effects of our derivative activities for the periods presented:

	Three Months Ended
	March 31,
	2014			2013
Impact by contract type:
Commodity contracts	$	(15,662	)	$	(7,761	)
Interest rate contracts	—			—
	$	(15,662	)	$	(7,761	)
Cash settlements and gains (losses):
Cash (paid) received for:
Commodity contract settlements	$	(3,057	)	$	3,557
Interest rate contract settlements	—			—
	(3,057		)	3,557
Losses attributable to:
Commodity contracts	(12,605		)	(11,318		)
Interest rate contracts	—			—
	(12,605		)	(11,318		)
	$	(15,662	)	$	(7,761	)

Fair Value of Derivative Instruments on Condensed Consolidated Balance Sheets

The following table summarizes the fair values of our derivative instruments as well as the locations of these instruments, on our Condensed Consolidated Balance Sheets as of the dates presented:

		Fair Values as of
		March 31, 2014				December 31, 2013
		Derivative		Derivative		Derivative		Derivative
Type	Balance Sheet Location	Assets		Liabilities		Assets		Liabilities
Commodity contracts	Derivative assets/liabilities - current	$	65	$	19,403	$	3,830	$	10,141
Interest rate contracts	Derivative assets/liabilities - current	—		—		—		—
		65		19,403		3,830		10,141
Commodity contracts	Derivative assets/liabilities - noncurrent	1,974		—		1,552		—
Interest rate contracts	Derivative assets/liabilities - noncurrent	—		—		—		—
		1,974		—		1,552		—
		$	2,039	$	19,403	$	5,382	$	10,141