Pension and Other Postretirement Benefits (Details 5) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Accrued liabilities	$ 8,225	$ 8,184
Accrued retirement benefits	80,884	159,103
Defined benefit pension plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	39,149	2,819
Accrued liabilities	3,334	3,109
Accrued retirement benefits	35,959	108,473
Accumulated other non-owner changes to equity, net	(67,422)	(140,108)
Net actuarial loss	(66,015)	(138,066)
Prior service costs	(1,407)	(2,042)
Defined benefit pension plans, U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	35,550	2,819
Accrued liabilities	2,707	2,720
Accrued retirement benefits	28,524	99,935
Accumulated other non-owner changes to equity, net	(48,564)	(116,305)
Net actuarial loss	(47,538)	(114,748)
Prior service costs	(1,026)	(1,557)
Defined benefit pension plans, Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	3,599	0
Accrued liabilities	627	389
Accrued retirement benefits	7,435	8,538
Accumulated other non-owner changes to equity, net	(18,858)	(23,803)
Net actuarial loss	(18,477)	(23,318)
Prior service costs	(381)	(485)
Other postretirement benefit plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued liabilities	4,891	5,075
Accrued retirement benefits	41,352	48,913
Accumulated other non-owner changes to equity, net	(5,804)	(6,286)
Net actuarial loss	(6,885)	(9,895)
Prior service costs	$ 1,081	$ 3,609