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Financial Instruments and Fair Value Disclosures (Details) (Interest rate swaps, USD $)	Mar. 31, 2015	Mar. 31, 2014
Derivative asset and liability
Number of interest rate swaps	5
Derivatives not designated as hedging instruments \| Long-term liabilities-Derivatives instruments
Derivative asset and liability
Liability derivatives	$ 12,730,462	$ 14,062,416

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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