Accounts Receivable, net (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Net Accounts Receivables
Trade receivables	$ 90,765	$ 87,303
Insurance claims	20,000
Other	944	1,003
Receivable Gross	111,709	88,306
Allowance for doubtful accounts	(710)	(955)
Accounts receivable, net	$ 110,999	$ 87,351