Pension Plan (Tables)

6 Months Ended

Jun. 30, 2011

Pension Plan [Abstract]

Components Of Net Periodic Benefit Expense

(in thousands)	Three months ended June 30,						Six months ended June 30,
	2011			2010			2011			2010
Service cost	$	1,139		$	918		$	2,278		$	1,836
Interest cost		992			896			1,984			1,792
Expected return on plan assets		(1,886	)		(1,457	)		(3,772	)		(2,914	)
Amortization of prior service cost		5			5			10			10
Recognized net actuarial loss		352			270			705			540
Benefit expense	$	602		$	632		$	1,205		$	1,264