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v3.19.3.a.u2

Basis of Presentation and General Information (General) (Details) | 1 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2020 item | Dec. 31, 2019 USD ($) item
Basis of Presentation and General Information |  |
Total number of vessels |  | 23
Number of fuel-efficient ECO-design VLGCs having 84,000 cbm |  | 19
Number of VLGCs having 82,000 cbm |  | 3
Number of time chartered-in VLGC |  | 1
The number of vessels that have exhaust gas cleaning systems |  | 6
Number of VLGCs with scrubber purchase commitments that were in-process | $ |  | $ 2
Number of VLGCs with scrubber purchase commitments that were completed | 1 | 4
Number of VLGCs with scrubber purchase commitments that remain to be installed |  | 4

X
- Definition Represents the number of fuel-efficient Eco-design Very Large Gas Carrier vessels in current fleet having a capacity of 84,000 cubic meters. + References No definition available. + Details
Name: | lpg_NumberOfFuelEfficientVeryLargeGasCarrierVesselsEightyFourThousandCapacity
Namespace Prefix: | lpg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of very large gas carrier VLGC time chartered-in vessels. + References No definition available. + Details
Name: | lpg_NumberOfVeryLargeGasCarrierTimeCharteredInVessels
Namespace Prefix: | lpg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of Very Large Gas Carrier vessels in current fleet having a capacity of 82,000 cubic meters. + References No definition available. + Details
Name: | lpg_NumberOfVeryLargeGasCarrierVesselsEightyTwoThousandCapacity
Namespace Prefix: | lpg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of Very Large Gas Carrier vessels that have been contracted to add scrubber that remain to be installed. + References No definition available. + Details
Name: | lpg_NumberOfVeryLargeGasCarrierVesselsThatHaveBeenContractedToAddScrubberThatRemainToBeInstalled
Namespace Prefix: | lpg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of Very Large Gas Carrier vessels that have been contracted to add scrubber that were completed. + References No definition available. + Details
Name: | lpg_NumberOfVeryLargeGasCarrierVesselsThatHaveBeenContractedToAddScrubberThatWereCompleted
Namespace Prefix: | lpg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of Very Large Gas Carrier vessels that have been contracted to add scrubber that were in-process. + References No definition available. + Details
Name: | lpg_NumberOfVeryLargeGasCarrierVesselsThatHaveBeenContractedToAddScrubberThatWereInProcess
Namespace Prefix: | lpg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the total number of vessels owned by the entity. + References No definition available. + Details
Name: | lpg_NumberOfVessels
Namespace Prefix: | lpg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of vessels that have exhaust gas cleaning systems. + References No definition available. + Details
Name: | lpg_NumberOfVesselsThatHaveExhaustGasCleaningScrubbers
Namespace Prefix: | lpg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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