Note 1 - General Information - Consolidated Revenue from Major Charters (Details) - Customer Concentration Risk [Member] - Sales Revenue, Net [Member]		3 Months Ended	9 Months Ended	12 Months Ended
		Dec. 31, 2014	Oct. 15, 2014	Dec. 31, 2016	Dec. 31, 2015
Charterer A [Member] | Successor [Member]
Percentage of consolidated charter revenue
Charterer A [Member] | Predecessor [Member]
Percentage of consolidated charter revenue			10.50%
Charterer B [Member] | Successor [Member]
Percentage of consolidated charter revenue	[1]	27.70%			17.20%
Charterer B [Member] | Predecessor [Member]
Percentage of consolidated charter revenue	[1]		17.70%

[1] Includes charter revenue from a pool that the Company participated.