Commitments and Contingencies (Details) (USD $)	9 Months Ended
Mar. 31, 2014 item
Commitments and Contingencies
Number of VLGC vessels acquired	19
Commitments under newbuilding contracts
2015	$ 327,577,240
2016	829,551,691
Total	$ 1,157,128,931

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant