Represents the rate of tax attributable to the entity's domestic source shipping income.

No definition available.

Name:	lpg_IncomeTaxRateOnDomesticSourceShippingIncome
Namespace Prefix:	lpg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Income Taxes (Predecessor) (Details) - U.S.	Mar. 31, 2016	Jul. 28, 2013
Income Taxes
Tax rate on foreign shipping income (as a percent)	4.00%
Predecessor
Income Taxes
Tax rate on foreign shipping income (as a percent)		4.00%