Pension Plan (Tables)

3 Months Ended

Mar. 31, 2013

Pension Plan [Abstract]

Components of net periodic pension cost

	For the Three Months Ended March 31,
(unaudited, in thousands)	2013			2012
Service cost – benefits earned during year	$	958		$	681
Interest cost on projected benefit obligation		1,096			965
Expected return on plan assets		(1,603	)		(1,378	)
Amortization of prior service cost		12			11
Amortization of net loss		822			569
Net periodic pension cost	$	1,285		$	848