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Note 15 - Voyage and Vessel Operating Expenses (Details) - Summary of Voyage Expenses in the Consolidated Statements of Operationgs (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Note 15 - Voyage and Vessel Operating Expenses (Details) - Summary of Voyage Expenses in the Consolidated Statements of Operationgs [Line Items]          
Total $ 6 $ 196 $ 663 $ 1,023 $ 7,743
Total     745 814 10,368
Voyage Expenses [Member]
          
Note 15 - Voyage and Vessel Operating Expenses (Details) - Summary of Voyage Expenses in the Consolidated Statements of Operationgs [Line Items]          
Port charges     18 24 1,141
Bunkers     125 177 4,684
Commissions     520 822 1,918
Total     663 1,023 7,743
Vessel Operating Expenses [Member]
          
Note 15 - Voyage and Vessel Operating Expenses (Details) - Summary of Voyage Expenses in the Consolidated Statements of Operationgs [Line Items]          
Crew wages and related costs       361 5,415
Insurance     47 83 1,165
Repairs and maintenance     689 179 1,356
Spares and consumable stores       184 2,369
Taxes (Note 17)     9 7 63
Total     $ 745 $ 814 $ 10,368