Debt and Commitments (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Apr. 05, 2011 Convertible Debt [Member] 3.75% Convertible Notes [Member]	Dec. 31, 2013 Convertible Debt [Member] 3.375% Convertible Notes [Member]	Dec. 31, 2012 Convertible Debt [Member] 3.375% Convertible Notes [Member]	Dec. 31, 2013 Revolving Credit Agreement [Member]	Dec. 31, 2012 Revolving Credit Agreement [Member]	Dec. 31, 2013 Borrowings Under Lines of Credit and Overdrafts [Member]	Dec. 31, 2012 Borrowings Under Lines of Credit and Overdrafts [Member]	Dec. 31, 2013 Foreign Bank Borrowings [Member]	Dec. 31, 2012 Foreign Bank Borrowings [Member]	Dec. 31, 2013 Capital Lease Obligations [Member]	Dec. 31, 2012 Capital Lease Obligations [Member]	Dec. 31, 2013 Other Debt Obligations [Member]	Dec. 31, 2012 Other Debt Obligations [Member]
Debt Instrument [Line Items]
Long-Term Debt, Gross			$ 92,500	$ 55,636	$ 55,636	$ 487,920	$ 589,200			$ 405	$ 945	$ 3,120	$ 159	$ 0	$ 415
Debt Instrument, Fair Value Disclosure	563,886	662,050		76,569	57,977	482,431	599,172	1,074	3,380	410	947	3,402	159	0	415
Unamortized debt discount				(731)	(3,122)
Borrowings under lines of credit and overdrafts	1,074	3,795						1,074	3,380
Total debt, net of unamortized discounts	547,424	646,613		54,905	52,514
Less current maturities	(57,083)	(4,494)
Long-term debt	$ 490,341	$ 642,119