Pension and Other Postretirement Benefits (Details 6) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	$ (73,168)	[1]	$ 15,741	[1]	$ 41,355	[1]
Defined benefit pension plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	0
Net loss	61,770
Amortization of prior service costs (credits)	622
Amortization of actuarial loss	11,179
Foreign exchange rate changes	(754)
Divestiture	(131)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	72,686
Other postretirement benefit plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	0
Net loss	2,522
Amortization of prior service costs (credits)	(2,565)
Amortization of actuarial loss	620
Foreign exchange rate changes	(95)
Divestiture	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	$ 482

[1] Net of tax of $43,109, $(7,994) and $(25,605) for the years ended December 31, 2013, 2012 and 2011, respectively.