Derivative Financial Instruments (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	$ (1,791)	$ 1,631	$ 193	$ 1,634
Revaluation of derivatives [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives		1,296		1,296
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	(1,565)		(478)
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	123	(5,311)	270	(5,311)
Revaluation of derivatives [Member] | Commodity derivatives [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	19	136	145	136
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		2,610
Foreign currency gain (loss) [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	(226)	353	671	353
Interest Expense [Member] | Interest Rate Swap [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	(14)		(42)
Other Comprehensive Income [Member]
Information relate to the effect of derivative instruments on our consolidated income statements
Total foreign currency derivatives	3		(30)
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		$ (18)		$ (15)