Deferred Charges, Net (Details)	3 Months Ended
Jun. 30, 2022 USD ($)
Movement in deferred charges, net
Balance at the beginning of the period - drydocking costs	$ 9,839,000
Amortization - drydocking costs	(699,186)
Balance at the end of the period - drydocking costs	$ 9,139,814

Represents the drydocking cost amortization expense recorded during the reporting period in the value of expenditures made during the current reporting period for benefits that will be received over a long-term period.

No definition available.

Name:	lpg_DrydockingCostsAmortization
Namespace Prefix:	lpg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration