Basis of Presentation and General Information (Details) - item		9 Months Ended
	Apr. 01, 2015	Dec. 31, 2015
Total number of vessels		22
Number of fuel-efficient ECO-design VLGCs having 84,000 cbm		18
Number of VLGCs having 82,000 cbm		3
Number of PGCs having 5,000 cbm		1
Helios LPG Pool LLC
Ownership interest (as a percent)		50.00%
Maximum
Maximum duration of time charters in pool	2 years