Pensions (Details 3) (USD $) In Thousands, unless otherwise specified	5 Months Ended	7 Months Ended	12 Months Ended		5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2010 U.S. [Member] Predecessor [Member]	Dec. 31, 2010 U.S. [Member] Successor [Member]	Dec. 31, 2012 U.S. [Member] Successor [Member]	Dec. 31, 2011 U.S. [Member] Successor [Member]	May 31, 2010 Non-U.S. [Member] Predecessor [Member]	Dec. 31, 2010 Non-U.S. [Member] Successor [Member]	Dec. 31, 2012 Non-U.S. [Member] Successor [Member]	Dec. 31, 2011 Non-U.S. [Member] Successor [Member]
Components of net periodic benefit cost (income)
Service cost	$ 1,002	$ 1,307	$ 1,150	$ 1,868	$ 893	$ 1,426	$ 3,126	$ 3,088
Interest cost	6,278	8,973	13,902	14,746	2,871	4,032	7,793	7,865
Expected return on plan assets	(6,050)	(8,619)	(15,471)	(16,207)	(1,460)	(2,051)	(4,027)	(4,036)
Amortization of prior service cost, recognized actuarial loss and transition obligation	1,467		496	19	70		377	40
Curtailment gain/settlement			80	(387)		(3,405)	473	50
Other				180		28
Net amount recognized at December 31	$ 2,697	$ 1,661	$ 157	$ 219	$ 2,374	$ 30	$ 7,742	$ 7,007