Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Components of the net periodic benefit cost

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