Note 5 - Vessels - Vessels and Vessel Improvements (Details) - USD ($)	3 Months Ended				12 Months Ended
	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Vessels and vessel improvements at beginning of period	$ 234,860,600					$ 76,332,734
Vessel impairment charge	(122,860,600)	$ (6,167,262)	$ (50,872,734)
Vessels and vessel improvements at end of period	234,860,600			$ 76,332,734	$ 234,860,600
Successor [Member]
Vessels and vessel improvements at beginning of period		733,960,731			733,960,731
Vessel impairment charge					(129,027,862)	(50,872,734)
Vessels and vessel improvements at end of period	567,592,950		733,960,731		567,592,950	733,960,731
Vessels and Vessel Improvements [Member]
Vessel impairment charge	(122,860,600)	(6,167,262)			(122,860,600)	(50,872,734)
Vessels and Vessel Improvements [Member] | Successor [Member]
Vessels and vessel improvements at beginning of period		$ 733,960,731			733,960,731
Purchase of Vessel and Vessel Improvements					19,860,401
Disposal of Vessels					(13,102,860)
Reclassification to vessels held for sale					(8,688,601)
Depreciation Expense					(35,408,859)
Vessel impairment charge					(129,027,862)
Vessels and vessel improvements at end of period	$ 567,592,950		$ 733,960,731		$ 567,592,950	$ 733,960,731