Asset Retirement Obligations (Tables)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2014

Dec. 31, 2014

Mar. 31, 2015

Jun. 30, 2015

Asset Retirement Obligations [Abstract]

Schedule of Changes in Asset Retirement Obligations

The following table reconciles the beginning and ending aggregate recorded amount of our asset retirement obligations.

	Three Months Ended September 30,
	2014
	(in thousands)
Beginning of period total	$	272,695
Accretion expense		6,181
Liabilities incurred		564
Liabilities settled		(7,190)
End of period total		272,250
Less: End of period, current portion		(39,831)
End of period, noncurrent portion	$	232,419

The following table reconciles the beginning and ending aggregate recorded amount of our asset retirement obligations.

	Six Months Ended December 31,
	2014
	(in thousands)
Beginning of period total	$	272,695
Accretion expense		12,279
Liabilities incurred and true-up to liabilities settled		5,212
Liabilities settled		(32,038)
End of period total		258,148
Less: Current portion		(39,831)
End of period, noncurrent portion	$	218,317

The following table reconciles the beginning and ending aggregate recorded amount of our asset retirement obligations.

	Nine Months Ended March 31,
	2015
	(in thousands)
Beginning of period total	$	272,695
Accretion expense		17,788
Liabilities incurred and true-up to liabilities settled		2,728
Liabilities settled		(39,025)
End of period total		254,186
Less: Current portion		(39,831)
End of period, noncurrent portion	$	214,355

The following table reconciles the beginning and ending aggregate recorded amount of our asset retirement obligations (“ARO”).

	Year Ended June 30,		Period from June 4, 2014 through June 30,		Period from January 1, 2014 through June 3,		Year Ended December 31,
	2015		2014		2014		2013
	(in thousands)				(in thousands)
Beginning of period total	$	272,695	$	260,161	$	255,450	$	235,110
Accretion expense		23,400		2,022		11,771		28,299
Liabilities assumed in acquisitions		-		1,088		18,165		23,541
Pushdown accounting fair value adjustment		-		13,211		-		-
Liabilities incurred		3,448		-		-		1,187
Revisions		49,394		-		7,415		24,586
Liabilities associated with assets sold		(55,319)		-		-		(3,965)
Liabilities settled		(53,256)		(3,787)		(32,640)		(53,308)
End of period total		240,362		272,695		260,161		255,450
Less: End of period, current portion		(38,056)		(39,831)		(39,859)		(51,601)
End of period, noncurrent portion	$	202,306	$	232,864	$	220,302	$	203,849