Derivative Financial Instruments (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	$ (985)	$ (8,060)	$ (792)	$ 2,254
Revaluation of derivatives [Member] | Foreign currency derivatives [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	(2,036)	(5,621)	(2,514)	(4,326)
Revaluation of derivatives [Member] | Currency Related Swap [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	1,045	1,745	1,315	(3,565)
Revaluation of derivatives [Member] | Commodity derivatives [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	(2)	(429)	143	(293)
Revaluation of derivatives [Member] | Series C Convertible Preferred Stock embedded derivatives [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives				2,610
Foreign currency gain (loss) [Member] | Foreign currency derivatives [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	1,051	(2,439)	1,722	2,087
Interest Expense [Member] | Interest Rate Swap [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	(12)		(54)
Other Comprehensive Income [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	(25)	283	(55)	283
Cost of sales [Member] | Foreign currency derivatives [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives				(15)
Cost of sales [Member] | Interest Rate Swap [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives		$ 42		$ 42