Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Components of net periodic benefit cost for pension and postretirement plans

The components of net periodic benefit cost for the pension and postretirement plans are as follows:

	Pension Benefits
	Three Months Ended   June 30,						Six Months Ended   June 30,
	2013			2012			2013			2012
	(in thousands)
Service cost	$	50		$	48		$	99		$	96
Interest cost	220			234			441			468
Expected return on plan assets	(278		)	(253		)	(557		)	(506		)
Amortization of net actuarial loss/prior service cost	194			178			388			356
Net periodic cost recognized	$	186		$	207		$	371		$	414

	Postretirement Benefits
	Three Months Ended   June 30,						Six Months Ended   June 30,
	2013			2012			2013			2012
	(in thousands)
Service cost	$	1		$	—		$	1		$	1
Interest cost	1			1			2			2
Amortization of net actuarial gain/prior service credit	(117		)	(118		)	(234		)	(236		)
Net periodic benefit recognized	$	(115	)	$	(117	)	$	(231	)	$	(233	)