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Accounts Receivable, net (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Net Accounts Receivables    
Trade receivables $ 83,774 $ 87,303
Insurance claims 13,799  
Other 799 1,003
Receivable Gross 98,372 88,306
Allowance for doubtful accounts (997) (955)
Accounts receivable, net $ 97,375 $ 87,351