Asset Retirement Obligation (Tables)

9 Months Ended

Sep. 30, 2012

Asset Retirement Obligation [Abstract]

Schedule of asset retirement obligation

In thousands	2012			2011
Balance at Jan. 1,	$	9,679		$	9,717
Accretion		347			388
Payments		(945	)		(1,018	)
Balance at Sept. 30,	$	9,081		$	9,087