Pension and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2014

Pension and Other Postretirement Benefits

Components of net periodic benefit cost

The components of net periodic benefit cost are as follows (in thousands):

	Pension Benefits						Other Postretirement Benefits
	For the three months ended March 31,						For the three months ended March 31,
	2014			2013			2014		2013
Components of net periodic benefit cost:
Service cost	$	1,701		$	1,766		$	1,944	$	2,486
Interest cost		3,348			3,070			7,726		7,198
Expected return on plan assets		(4,553	)		(4,235	)		—		—
Amortization of prior service cost		61			66			307		307
Amortization of net actuarial loss		642			2,434			3,892		4,734
Settlement loss		784			—			—		—
Net periodic benefit cost	$	1,983		$	3,101		$	13,869	$	14,725