Financial Instruments and Fair Value Disclosures (FV) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017
Derivative Instruments
Change in fair value	$ 652,160	$ 6,528,203	$ (1,718,031)	$ 2,158,344
Realized loss on derivatives	(435,920)	(2,333,915)	(1,048,783)	(4,590,703)
Interest rate swaps | Derivatives not designated as hedging instruments
Derivative Instruments
Gain/(loss) on derivatives, net	216,240	4,194,288	(2,766,814)	(2,432,359)
Interest rate swaps | Derivatives not designated as hedging instruments | Unrealized loss on derivatives
Derivative Instruments
Change in fair value	652,160	6,528,203	(1,718,031)	2,158,344
Interest rate swaps | Derivatives not designated as hedging instruments | Realized loss on derivatives
Derivative Instruments
Realized loss on derivatives	(435,920)	$ (2,333,915)	(1,048,783)	$ (4,590,703)
Interest rate swaps | Derivatives not designated as hedging instruments | Other non-current assets-Derivative instruments
Derivative Instruments
Derivative Asset	4,224,541		4,224,541		$ 5,843,368
Interest rate swaps | Derivatives not designated as hedging instruments | Long-term liabilities-Derivatives instruments
Derivative Instruments
Liability derivatives	$ 99,204		$ 99,204