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Note 1 - Consolidated Revenue from Major Charters (Details)
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Charterer A [Member] | Successor [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]    
Percentage of consolidated charter revenue [1] 28.40%
[1] Charter revenue from a pool that the Company participated.