Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Commodity Derivative Positions

The following table sets forth our commodity derivative positions as of December 31, 2015:

		Average
		Volume Per	Weighted Average Price			Fair Value
	Instrument	Day	Floor/Swap		Ceiling	Asset		Liability
Crude Oil:		(barrels)	($/barrel)
First quarter 2016	Swaps	6,000	$	80.41		$	22,894	$	—
Second quarter 2016	Swaps	6,000	$	80.41		21,509		—
Third quarter 2016	Swaps	6,000	$	80.41		20,767		—
Fourth quarter 2016	Swaps	6,000	$	80.41		19,937		—
Settlements to be received in subsequent period						12,849		—

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 Consolidated Statements of Operations. The following table summarizes the effects of our derivative activities for the periods presented:

	Year Ended December 31,
	2015			2014			2013
Cash settlements and gains (losses):
Cash received (paid) for:
Commodity contract settlements	$	138,169		$	(7,424	)	$	(1,042	)
Gains (losses) attributable to:
Commodity contracts	(66,922		)	169,636			(19,810		)
	$	71,247		$	162,212		$	(20,852	)

Fair Value of Derivative Instruments on Condensed Consolidated Balance Sheets

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

		Fair Values as of
		December 31, 2015				December 31, 2014
		Derivative		Derivative		Derivative		Derivative
Type	Balance Sheet Location	Assets		Liabilities		Assets		Liabilities
Commodity contracts	Derivative assets/liabilities – current	$	97,956	$	—	$	128,981	$	—
Commodity contracts	Derivative assets/liabilities – noncurrent	—		—		35,897		—
		$	97,956	$	—	$	164,878	$	—