Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2016

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Reconciliation of Company's Asset Retirement Obligations

The following is a reconciliation of the Company’s asset retirement obligations for the six months ended June 30, 2016:

(in thousands)
Balance at December 31, 2015	$	8,145
Net increase due to changes in estimated future cash flows		39
Accretion expense		466
Balance at June 30, 2016	$	8,650