Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 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	14			361			375
Additions	—			105			105
Reclassifications	238			(238		)	—
Amounts paid	(182		)	—			(182		)
Balance at June 30, 2014	$	428		$	7,827		$	8,255