Retirement Benefit Plans

6 Months Ended

Jun. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Retirement Benefit Plans

10. Retirement Benefit Plans

Our defined benefit pension plans and postretirement medical plan are described in Note 11 of the 2012 annual report on Form 10-K. We have contributed $68 and $83 during the second quarter of 2013 and $137 and $229 during the first six months of 2013 to our pension plans and to our postretirement medical plan, respectively.

The components of the net periodic benefit cost for the three and six months ended June 30, 2013 and 2012 were as follows:

	Three Months Ended
	June 30
	Pension Benefits												Postretirement
	U.S. Plans						Non-U.S. Plans						Medical Benefits
	2013			2012			2013			2012			2013			2012
Service cost	$	216		$	174		$	33		$	33		$	38		$	35
Interest cost	563			483			121			131			110			139
Expected return on plan assets	(910		)	(569		)	(115		)	(118		)	—			—
Amortization of net actuarial loss (gain)	1,073			282			—			—			127			17
Amortization of prior service cost	(503		)	95			80			39			(102		)	(145		)
Foreign currency	—			—			(13		)	45			—			—
Net periodic cost	$	439		$	465		$	106		$	130		$	173		$	46

	Six Months Ended
	June 30
	Pension Benefits												Postretirement
	U.S. Plans						Non-U.S. Plans						Medical Benefits
	2013			2012			2013			2012			2013			2012
Service cost	$	432		$	339		$	66		$	66		$	76		$	70
Interest cost	1,131			961			243			261			222			279
Expected return on plan assets	(1,820		)	(1,140		)	(231		)	(235		)	—			—
Amortization of net actuarial loss (gain)	1,096			568			—			—			101			34
Amortization of prior service cost	46			192			161			77			(52		)	(290		)
Foreign currency	—			—			29			23			—			—
Net periodic cost	$	885		$	920		$	268		$	192		$	347		$	93