Other (Income), net Level 4 (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2012 Gains (Losses) on Sales of Assets [Member]	Sep. 30, 2011 Gains (Losses) on Sales of Assets [Member]	Sep. 30, 2012 Gains (Losses) on Sales of Assets [Member]	Sep. 30, 2011 Gains (Losses) on Sales of Assets [Member]	Sep. 30, 2012 Foreign Currency Gain (Loss) [Member]	Sep. 30, 2011 Foreign Currency Gain (Loss) [Member]	Sep. 30, 2012 Foreign Currency Gain (Loss) [Member]	Sep. 30, 2011 Foreign Currency Gain (Loss) [Member]	Sep. 30, 2012 Other Operating Expense [Member]	Sep. 30, 2011 Other Operating Expense [Member]	Sep. 30, 2012 Other Operating Expense [Member]	Sep. 30, 2011 Other Operating Expense [Member]	Sep. 30, 2012 Rents And Royalties Income Loss [Member]	Sep. 30, 2011 Rents And Royalties Income Loss [Member]	Sep. 30, 2012 Rents And Royalties Income Loss [Member]	Sep. 30, 2011 Rents And Royalties Income Loss [Member]	Sep. 30, 2012 gain loss on insurance recovery [Member]	Sep. 30, 2011 gain loss on insurance recovery [Member]	Sep. 30, 2012 gain loss on insurance recovery [Member]	Sep. 30, 2012 Legal entity realignment [Member]	Sep. 30, 2011 Legal entity realignment [Member]	Sep. 30, 2012 Legal entity realignment [Member]	Sep. 30, 2011 Legal entity realignment [Member]	Sep. 30, 2012 RegistrationExpenseEuronext [Member]	Sep. 30, 2011 RegistrationExpenseEuronext [Member]	Sep. 30, 2012 RegistrationExpenseEuronext [Member]	Sep. 30, 2011 RegistrationExpenseEuronext [Member]	Sep. 30, 2012 Component of Other Income, Nonoperating, Name [Domain]	Sep. 30, 2011 Component of Other Income, Nonoperating, Name [Domain]	Sep. 30, 2012 Component of Other Income, Nonoperating, Name [Domain]	Sep. 30, 2011 Component of Other Income, Nonoperating, Name [Domain]	Sep. 30, 2012 gain loss on fire insurance recovery [Member] gain loss on insurance recovery [Member]	Sep. 30, 2011 gain loss on fire insurance recovery [Member] gain loss on insurance recovery [Member]	Sep. 30, 2012 Gainlossonbusinessinterruptioninsuranc [Member] gain loss on insurance recovery [Member]	Jun. 30, 2012 Gainlossonbusinessinterruptioninsuranc [Member] gain loss on insurance recovery [Member]	Sep. 30, 2012 Gainlossonbusinessinterruptioninsuranc [Member] gain loss on insurance recovery [Member]
Component of Operating Other Cost and Expense [Line Items]
Other Nonoperating Income (Expense)	$ (70,000)	$ (278,000)	$ (383,000)	$ (416,000)	$ (610,000)	$ 1,522,000	$ (280,000)	$ 1,001,000	$ (339,000)	$ (256,000)	$ (771,000)	$ (420,000)	$ (214,000)	$ (440,000)	$ (809,000)	$ (1,273,000)	$ (1,023,000)	$ 0	$ (4,490,000)	$ 0	$ 0	$ 1,860,000	$ 711,000	$ 0	$ 0	$ 923,000	$ 0	$ (2,256,000)	$ 548,000	$ (3,950,000)	$ (1,176,000)	$ (101,000)	$ (779,000)	$ (1,000,000)	$ (3,400,000)	$ (4,400,000)