Segment Reporting (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	Dec. 31, 2011
Net Sales:
Total net sales	$ 219,256	$ 195,864	$ 715,788	$ 579,325
Long-Term Assets:
Total long-term assets	288,506		288,506		307,534
North America [Member]
Net Sales:
Total net sales	141,932	154,671	471,270	455,050
Long-Term Assets:
Total long-term assets	84,862		84,862		83,460
South America [Member]
Net Sales:
Total net sales	43,774	0	135,939	0
Long-Term Assets:
Total long-term assets	190,043		190,043		210,028
Europe and Other [Member]
Net Sales:
Total net sales	33,550	41,193	108,579	124,275
Long-Term Assets:
Total long-term assets	$ 13,601		$ 13,601		$ 14,046