Pension and Other Postretirement Benefits

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits

Pension and Other Postretirement Benefits

Pension and other postretirement benefits expenses consisted of the following:

	Three months ended March 31,
Pensions	2013			2012
Service cost	$	1,984		$	1,613
Interest cost	4,987			5,322
Expected return on plan assets	(8,276		)	(8,033		)
Amortization of prior service cost	203			211
Recognized losses	4,075			2,759
Curtailment loss	199			—
Net periodic benefit cost	$	3,172		$	1,872
	Three months ended March 31,
Other Postretirement Benefits	2013			2012
Service cost	$	77		$	77
Interest cost	543			680
Amortization of prior service credit	(395		)	(396		)
Recognized losses	290			286
Net periodic benefit cost	$	515		$	647

The curtailment loss during the first quarter of 2013 relates to the defined benefit pension plans that were impacted by the planned sale of BDNA. The Company also expects that its defined benefit pension and other post retirement benefit plans may be impacted by curtailments and settlements related to the sale of BDNA during the second quarter of 2013. See Note 2.

The Company contributes to a multi-employer defined benefit pension plan under the terms of a collective bargaining agreement. This multi-employer plan provides pension benefits to certain union-represented employees at BDNA. The Company has determined that a withdrawal from this multi-employer plan, following its entry into a definitive agreement to sell BDNA, is probable. The Company has estimated that its assessment of a withdrawal liability, on a pre-tax discounted basis, is $2,788. The expense has been recorded within discontinued operations.