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FINANCIAL INSTRUMENTS Part I(Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2011
Dec. 31, 2010
Estimate of Fair Value, Fair Value Disclosure [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and Cash Equivalent $ 10,404 $ 17,221
Marketable Securities 550 0
Loan to First Olsen Ltd 26,809 26,809
Working capital, cooperative arrangements 28,600 22,034
Credit Facility 170,000 75,000
Carrying (Reported) Amount, Fair Value Disclosure [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and Cash Equivalent 10,404 17,221
Marketable Securities 795 0
Loan to First Olsen Ltd 26,809 26,809
Working capital, cooperative arrangements 28,600 22,034
Credit Facility $ 170,000 $ 75,000