Pension and Postretirement Benefits other than Pensions (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Other Postretirement Benefit Plans, Defined Benefit [Member]

Dec. 31, 2012

Pension Plans, Defined Benefit

Components of net periodic benefit cost (income)

The following tables disclose the amount of net periodic benefit cost for the three months ended March 31, 2012 and 2013 for the Company’s defined benefit plans and other postretirement benefit plans:

	Pension Benefits
	Three Months Ended March 31,
	2012						2013
	U.S.			Non-U.S.			U.S.			Non-U.S.
Service cost	$	287		$	803		$	305		$	888
Interest cost		3,476			1,972			3,052			1,710
Expected return on plan assets		(3,868	)		(1,003	)		(4,342	)		(949	)
Amortization of prior service cost and recognized actuarial loss		124			95			344			330
Net periodic benefit cost (gain)	$	19		$	1,867		$	(641	)	$	1,979
	Other Postretirement Benefits
	Three Months Ended March 31,
	2012						2013
	U.S.			Non-U.S.			U.S.			Non-U.S.
Service cost	$	136		$	192		$	147		$	168
Interest cost		449			210			407			188
Amortization of prior service cost (credit) and recognized actuarial (gain) loss		(444	)		34			(281	)		(36	)
Other		19			—			6			—
Curtailment gain		(1,539	)		—			—			—
Net periodic benefit cost (gain)	$	(1,379	)	$	436		$	279		$	320

The following table provides the components of net periodic benefit costs for the plans:

	Predecessor						Successor
	Five Months Ended May 31, 2010						Seven Months Ended December 31, 2010				Year Ended December 31,
											2011					2012
	U.S.			Non-U.S.			U.S.		Non-U.S.		U.S.			Non-U.S.		U.S.			Non-U.S.
Service cost	$	481		$	157		$	705	$	308	$	1,196		$	635	$	542		$	650
Interest cost		1,341			360			1,893		506		3,004			917		1,795			822
Amortization of prior service cost (credit) and recognized actuarial loss (gain)		(1,381	)		(14	)		—		—		2			—		(1,777	)		(54	)
Curtailment gain		—			—			—		—		(384	)		—		(1,539	)		—
Other		35			—			50		—		85			—		75			—
Net periodic benefit cost	$	476		$	503		$	2,648	$	814	$	3,903		$	1,552	$	(904	)	$	1,418

The following table provides the components of net periodic benefit cost for the five months ended May 31, 2010, the seven months ended December 31, 2010 and the years ended December 31, 2011 and 2012:

	Predecessor						Successor
	Five Months Ended May 31, 2010						Seven Months Ended December 31, 2010						Year Ended December 31,
													2011						2012
	U.S.			Non-U.S.			U.S.			Non-U.S.			U.S.			Non-U.S.			U.S.			Non-U.S.
Service cost	$	1,002		$	893		$	1,307		$	1,426		$	1,868		$	3,088		$	1,150		$	3,126
Interest cost		6,278			2,871			8,973			4,032			14,746			7,865			13,902			7,793
Expected return on plan assets		(6,050	)		(1,460	)		(8,619	)		(2,051	)		(16,207	)		(4,036	)		(15,471	)		(4,027	)
Amortization of prior service cost and recognized actuarial loss		1,467			70			—			—			19			40			496			377
Curtailment (gain) settlement		—			—			—			(3,405	)		(387	)		50			80			473
Other		—			—			—			28			180			—			—			—
Net periodic benefit cost	$	2,697		$	2,374		$	1,661		$	30		$	219		$	7,007		$	157		$	7,742