Significant Accounting Policies (AcctPro) (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Significant Accounting Policies
Deferred charges, net	$ (1,574,522)	$ (1,884,174)	$ (294,935)
Total assets	(1,736,110,156)	(1,746,234,880)
Long-term debt—net of current portion and deferred financing fees	(694,035,583)	(683,985,463)
Total long-term liabilities	$ (694,687,152)	$ (684,468,148)