Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2014

Asset Retirement Obligation Disclosure [Abstract]

Changes in Asset Retirement Obligation Liabilities

The components of the changes in the asset retirement obligation liabilities were:

	Short-Term Portion			Long-Term Portion			Total
	(Dollars in thousands)
Balance at January 1, 2014	$	358		$	7,599		$	7,957
Accretion	21			543			564
Additions	—			141			141
Reclassifications	373			(373		)	—
Amounts paid	(342		)	—			(342		)
Balance at September 30, 2014	$	410		$	7,910		$	8,320