Asset Retirement Obligation (Tables)

6 Months Ended

Jun. 30, 2016

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Asset Retirement Obligation

Following is a summary of activity recorded during the first six months of 2016 and 2015:

In thousands	2016			2015
Balance at January 1,	$	419		$	4,114
Accretion		—			59
Payments		(16	)		(1,905	)
Downward revision		—			(1,000	)
Gain		(2	)		(286	)
Balance at June 30,	$	401		$	982