Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Pension Benefits [Member]

Employee Benefit Plans [Line Items]

Employee Benefit Plans

	Pension Benefits
(in thousands)	Three months ended March 31,
	2012			2011
Service cost	$	—		$	—
Interest cost		1,143			1,126
Expected return on plan assets		(1,539	)		(1,560	)
Recognized net actuarial loss		450			223
Benefit cost (income)	$	54		$	(211	)

Postretirement Benefits [Member]

Employee Benefit Plans [Line Items]

Employee Benefit Plans

	Postretirement Benefits
(in thousands)	Three months ended March 31,
	2012			2011
Service cost	$	192		$	141
Interest cost		333			318
Amortization of prior service cost		(136	)		(136	)
Recognized net actuarial loss		327			209
Benefit cost	$	716		$	532