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Significant Accounting Policies (AcctPro) (Details) - USD ($)
Sep. 30, 2016
Mar. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Deferred charges, net $ (343,474) $ (294,935)
Long-term debt—net of current portion and deferred financing fees (715,158,576) (746,354,613)
Presentation of debt issuance costs    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Deferred charges, net 22,000,000 23,700,000
Long-term debt—net of current portion and deferred financing fees $ 22,000,000 $ 23,700,000