Amount of gain (loss) included in earnings for the period interest on the interest rate derivatives.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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Financial Instruments and Fair Value Disclosures (FV) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016
Derivative Instruments
Change in fair value	$ 6,528,203	$ (5,111,430)	$ 2,158,344	$ (3,724,545)
Realized loss on derivatives	(2,333,915)	(1,230,333)	(4,590,703)	(2,474,823)
Impairment			0	0
Interest rate swaps \| Derivatives not designated as hedging instruments
Derivative Instruments
Gain/(loss) on derivatives, net	4,194,288	(6,341,763)	(2,432,359)	(6,199,368)
Interest rate swaps \| Derivatives not designated as hedging instruments \| Unrealized gain/(loss) on derivatives
Derivative Instruments
Change in fair value	6,528,203	(5,111,430)	2,158,344	(3,724,545)
Interest rate swaps \| Derivatives not designated as hedging instruments \| Realized loss on derivatives
Derivative Instruments
Realized loss on derivatives	(2,333,915)	$ (1,230,333)	(4,590,703)	$ (2,474,823)
Interest rate swaps \| Derivatives not designated as hedging instruments \| Long-term liabilities-Derivatives instruments
Derivative Instruments
Liability derivatives	$ 19,489,621		$ 19,489,621		$ 21,647,965