Deferred Charges, Net (Details)	9 Months Ended
Dec. 31, 2023 USD ($)
Balance, April 1, 2023	$ 8,367,301
Balance, September 30, 2023	12,162,891
Drydocking Costs
Balance, April 1, 2023	8,367,301
Additions	6,780,894
Amortization	(2,985,304)
Balance, September 30, 2023	$ 12,162,891

Amount of amortization of deferred costs recognized in the income statement.

No definition available.

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

- Definition

Amount of significant additions in the period in other assets (current, noncurrent, or unclassified).

+ References

+ Details

Name:	us-gaap_AdditionsToOtherAssetsAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of deferred cost, excluding capitalized cost related to contract with customer; classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

Name:	us-gaap_DeferredCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=us-gaap_CapitalAdditionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: