Pension Plan (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2012

Dec. 31, 2011

Pension Plan

Schedule of components of net periodic pension costs

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2012			2011			2012			2011
Interest cost	$	269		$	274		$	808		$	821
Expected return on plan assets	(320		)	(308		)	(959		)	(925		)
Recognized net actuarial loss	172			88			514			265
Net periodic cost	$	121		$	54		$	363		$	161

	Year Ended December 31,
(in thousands)	2011			2010			2009
Interest cost	$	1,095		$	1,088		$	1,065
Expected return on plan assets		(1,234	)		(1,218	)		(1,213	)
Recognized net actuarial loss		353			154			12
Net periodic benefit cost (benefit)	$	214		$	24		$	(136	)