Note 10 - Derivative Instruments and Fair Value Measurements - Effect of Non-designated Derivative Instruments (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2014	Oct. 15, 2014	Dec. 31, 2016	Dec. 31, 2015
Successor [Member]
Derivative Instruments Not Designated as Hedging Instruments, Loss			$ 561,495
Predecessor [Member]
Derivative Instruments Not Designated as Hedging Instruments, Loss
Forward Freight Agreements [Member] | Other Expense [Member] | Successor [Member]
Derivative Instruments Not Designated as Hedging Instruments, Loss			$ 561,495
Forward Freight Agreements [Member] | Other Expense [Member] | Predecessor [Member]
Derivative Instruments Not Designated as Hedging Instruments, Loss