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Note 6 - Assets Held for Sale (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2011
Dec. 31, 2013
M/T UACC Sila [Member]
Dec. 31, 2012
M/T UACC Sila [Member]
Note 6 - Assets Held for Sale (Details) [Line Items]        
Asset Impairment Charges       $ 16,978
Proceeds from Sale of Productive Assets $ 25,214 $ 118,220 $ 26,000