Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets:
Restricted Cash	$ 2,938	$ 12,367
Marketable securities	4,776	4,787
Fair Value Measurements, Recurring basis [Member]
Assets:
Restricted Cash	2,938	12,367
Marketable securities	4,776	4,787
Derivative Assets	552
Pension assets not owned by plan	6,523	6,572
Total Assets	14,789	23,843
Liabilities:
Total Liabilities	1,023	828
Equity securities [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities	532	542
Certificates of deposit [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities	4,244	4,245
Option contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets	546	117
Liabilities:
Derivative liabilities	853	440
Forward contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets	6
Liabilities:
Derivative liabilities	170	388
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Restricted Cash	2,938	12,367
Marketable securities	532	542
Derivative Assets
Pension assets not owned by plan
Total Assets	3,470	12,909
Liabilities:
Total Liabilities
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity securities [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities	532	542
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Certificates of deposit [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Option contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets
Liabilities:
Derivative liabilities
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Forward contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets
Liabilities:
Derivative liabilities
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Restricted Cash
Marketable securities	4,244	4,245
Derivative Assets	552
Pension assets not owned by plan	6,523	6,572
Total Assets	11,319	10,934
Liabilities:
Total Liabilities	1,023	828
Significant Other Observable Inputs (Level 2) [Member] | Equity securities [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities
Significant Other Observable Inputs (Level 2) [Member] | Certificates of deposit [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities	4,244	4,245
Significant Other Observable Inputs (Level 2) [Member] | Option contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets	546	117
Liabilities:
Derivative liabilities	853	440
Significant Other Observable Inputs (Level 2) [Member] | Forward contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets	6
Liabilities:
Derivative liabilities	170	388
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Restricted Cash
Marketable securities
Derivative Assets
Pension assets not owned by plan
Total Assets
Liabilities:
Total Liabilities
Significant Unobservable Inputs (Level 3) [Member] | Equity securities [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities
Significant Unobservable Inputs (Level 3) [Member] | Certificates of deposit [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Marketable securities
Significant Unobservable Inputs (Level 3) [Member] | Option contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets
Liabilities:
Derivative liabilities
Significant Unobservable Inputs (Level 3) [Member] | Forward contracts [Member] | Fair Value Measurements, Recurring basis [Member]
Assets:
Derivative Assets
Liabilities:
Derivative liabilities