Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2014

Asset Retirement Obligations

Schedule of reconciliation of asset retirement obligations

The following is a reconciliation of the Company’s asset retirement obligations for the years ended December 31, 2013 and 2014 (in thousands).

	2013		2014
Asset retirement obligations—beginning of year	$	10,552		11,859
Obligations incurred for wells drilled and producing properties acquired		242		3,484
Accretion expense		1,065		1,271
Asset retirement obligations—end of year	$	11,859		16,614