Pension and Other Postretirement Benefits - Cash Flow (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	$ 6,610
Expected Benefit Payments, Next Twelve Months	7,304
Expected Benefit Payments, Year Two	7,028
Expected Benefit Payments, Year Three	6,209
Expected Benefit Payments, Year Four	6,733
Expected Benefit Payments, Year Five	6,535
Expected Benefit Payments, Thereafter	37,336
Domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	2,111
Expected Benefit Payments, Next Twelve Months	4,885
Expected Benefit Payments, Year Two	4,780
Expected Benefit Payments, Year Three	4,442
Expected Benefit Payments, Year Four	4,468
Expected Benefit Payments, Year Five	4,311
Expected Benefit Payments, Thereafter	21,308
Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	4,499
Expected Benefit Payments, Next Twelve Months	2,419
Expected Benefit Payments, Year Two	2,248
Expected Benefit Payments, Year Three	1,767
Expected Benefit Payments, Year Four	2,265
Expected Benefit Payments, Year Five	2,224
Expected Benefit Payments, Thereafter	16,028
Domestic Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	719
Expected Benefit Payments, Next Twelve Months	719
Expected Benefit Payments, Year Two	697
Expected Benefit Payments, Year Three	634
Expected Benefit Payments, Year Four	611
Expected Benefit Payments, Year Five	594
Expected Benefit Payments, Thereafter	$ 2,527