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Transactions with Related Parties (Details)		1 Months Ended	3 Months Ended
	Apr. 01, 2015 item	Mar. 31, 2016 USD ($) item	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Transactions with Related Parties
Fees for chartering and operational services			$ 552,901	$ 383,642
Due from related parties		$ 54,504,359	44,573,756
Eagle Ocean Transport
Transactions with Related Parties
Reimbursed related travel costs and office-related costs			100,000	300,000
Manager
Transactions with Related Parties
Due from related parties		900,000	1,000,000
Due to related party		500,000	500,000
Helios LPG Pool LLC
Transactions with Related Parties
Due from related parties		71,000,000	62,300,000
Interest transferred to Dorian LPG Ltd. (as a percent)	50.00%
Number of members | item	2
Working capital contributed		$ 17,600,000	18,700,000
Helios LPG Pool LLC | Oriental Energy
Transactions with Related Parties
Number of vessels contributed by third party | item		8
Relative of executive officer
Transactions with Related Parties
Related party expense			0	100,000
Other income-related party | Helios LPG Pool LLC
Transactions with Related Parties
Fees for chartering and operational services			500,000	400,000
Other income | Manager
Transactions with Related Parties
Fees for chartering and operational services			100,000	100,000
Other income | Helios LPG Pool LLC
Transactions with Related Parties
Reimbursed high risk related costs			$ 300,000	$ 0

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Costs of sales and operating expenses for the period incurred from transactions with related parties.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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