Name:	lpg_BallastWaterManagementSystemsPurchasesCommitmentTableTextBlock
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Tabular disclosure of scrubber purchases arrangements in which the entity has committed resources to supply goods or services to a customer. May include identification of the goods or services to be furnished, identity of the purchasing party, pricing, effects on pricing for failing to deliver the [minimum] quantities required to be furnished, cancellation rights, and termination provisions.

No definition available.

Name:	lpg_ScrubberPurchasesSupplyCommitmentTableTextBlock
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Tabular disclosure of time charter-in future commitments.

No definition available.

Name:	lpg_TimeCharterCommitmentTableTextBlock
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Data Type:	nonnum:textBlockItemType
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Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

Name:	us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
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Tabular disclosure of arrangements in which the entity has committed resources to supply goods or services to a customer. May include identification of the goods or services to be furnished, identity of the purchasing party, pricing, effects on pricing for failing to deliver the [minimum] quantities required to be furnished, cancellation rights, and termination provisions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(25))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682