Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Summary of the valuation of the Company's financial assets and liabilities that were accounted for at fair value on a recurring basis

The following tables summarize the valuation of the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis in accordance with the classifications provided above as of March 31, 2015 and December 31, 2014 (in thousands).



	Fair Value Measurements at March 31, 2015 using
Description	Level 1		Level 2			Level 3		Total
Assets (Liabilities)
Oil, natural gas and NGL derivatives	$	—	$	47,011		$	—	$	47,011
Oil, natural gas and NGL derivatives	—		(19		)	—		(19		)
Total	$	—	$	46,992		$	—	$	46,992



	Fair Value Measurements at December 31, 2014 using
Description	Level 1		Level 2		Level 3		Total
Assets (Liabilities)
Oil, natural gas and NGL derivatives	$	—	$	55,549	$	—	$	55,549
Total	$	—	$	55,549	$	—	$	55,549

Additions to asset retirement obligations and lease and well equipment inventory at fair value on a non-recurring basis

The following tables summarize the valuation of the Company’s assets and liabilities that were accounted for at fair value on a non-recurring basis for the periods ended March 31, 2015 and December 31, 2014 (in thousands).



	Fair Value Measurements at March 31, 2015 using
Description	Level 1		Level 2		Level 3			Total
Assets (Liabilities)
Asset retirement obligations	$	—	$	—	$	(1,701	)	$	(1,701	)
Total	$	—	$	—	$	(1,701	)	$	(1,701	)



	Fair Value Measurements at December 31, 2014 using
Description	Level 1		Level 2		Level 3			Total
Assets (Liabilities)
Asset retirement obligations	$	—	$	—	$	(3,985	)	$	(3,985	)
Total	$	—	$	—	$	(3,985	)	$	(3,985	)