Basis of Presentation and General Information (Details 3) (Revenue, Customer concentration)	9 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2015
Statoil ASA
Charterers individually accounting for more than 10% of revenues
Percentage of total revenues	51.00%	27.00%
Royal Dutch Shell plc
Charterers individually accounting for more than 10% of revenues
Percentage of total revenues		19.00%
Itochu Corporation
Charterers individually accounting for more than 10% of revenues
Percentage of total revenues		14.00%
Indian Oil Corporation Ltd
Charterers individually accounting for more than 10% of revenues
Percentage of total revenues		12.00%
Maritime Pressx Limited
Charterers individually accounting for more than 10% of revenues
Percentage of total revenues		11.00%
Naftomar Shipping and Trading Co. Ltd
Charterers individually accounting for more than 10% of revenues
Percentage of total revenues	13.00%
Kuwait Petroleum Corporation
Charterers individually accounting for more than 10% of revenues
Percentage of total revenues	10.00%