Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Measurements [Abstract]

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

	Fair Value Measurements at March 31, 2013 using
Description	Level 1		Level 2			Level 3		Total
Assets (Liabilities)
Certificates of deposit	$	-	$	141		$	-	$	141
Oil, natural gas and NGL derivatives		-		2,285			-		2,285
Oil, natural gas and NGL derivatives		-		(2,631	)		-		(2,631	)
Total	$	-	$	(205	)	$	-	$	(205	)
	Fair Value Measurements at December 31, 2012 using
Description	Level 1		Level 2			Level 3		Total
Assets (Liabilities)
Certificates of deposit	$	-	$	230		$	-	$	230
Oil, natural gas and NGL derivatives		-		5,149			-		5,149
Oil, natural gas and NGL derivatives		-		(670	)		-		(670	)
Total	$	-	$	4,709		$	-	$	4,709

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

	Fair Value Measurements at March 31, 2013 using
Description	Level 1		Level 2		Level 3			Total
Assets (Liabilities)
Asset retirement obligations	$	-	$	-	$	(656	)	$	(656	)
Total	$	-	$	-	$	(656	)	$	(656	)

	Fair Value Measurements at December 31, 2012 using
Description	Level 1		Level 2		Level 3			Total
Assets (Liabilities)
Asset retirement obligations	$	-	$	-	$	(1,243	)	$	(1,243	)
Lease and well equipment inventory		-		-		34			34
Total	$	-	$	-	$	(1,209	)	$	(1,209	)