Represents the face amount or stated value per share of common and preferred stock.

No definition available.

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- Definition

Represents the maximum number of common and preferred shares permitted to be issued by the entity's charter and bylaws.

+ References

No definition available.

+ Details

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- Definition

Represents the number of fractional shares issued in connection with the reverse stock split.

+ References

No definition available.

+ Details

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- Definition

Represents number of votes entitled to shareholders.

+ References

No definition available.

+ Details

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Namespace Prefix:	lpg_
Data Type:	xbrli:integerItemType
Balance Type:	na
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- Details

Name:	lpg_StockholdersEquityLineItems
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- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

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Balance Type:	na
Period Type:	instant

- Details

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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29

-Article 5

+ Details

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Period Type:	instant

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Stock Split

-URI http://asc.fasb.org/extlink&oid=6525746

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 4

-Subparagraph (SAB TOPIC 4.C)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of common and preferred stock retired from treasury during the period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Common Stock (Details)	12 Months Ended			0 Months Ended							9 Months Ended		0 Months Ended				0 Months Ended				0 Months Ended
Common Stock (Details)	Mar. 31, 2015 USD ($) item	Mar. 31, 2014 USD ($)	Jul. 01, 2013 USD ($)	May 22, 2014 Common stock	May 13, 2014 Common stock	Apr. 25, 2014 Common stock	Feb. 12, 2014 Common stock	Nov. 26, 2013 Common stock	Jul. 29, 2013 Common stock	Jul. 01, 2013 Common stock	Mar. 31, 2014 Common stock	Apr. 25, 2014 Common stock USD ($)	Jul. 29, 2013 Common stock Dorian Holdings	Jul. 01, 2013 Common stock Dorian Holdings	Jul. 29, 2013 Common stock Dorian Holdings USD ($)	Jul. 29, 2013 Common stock Dorian Holdings NOK	Nov. 26, 2013 Common stock Scorpio	Jul. 29, 2013 Common stock SeaDor	Jul. 29, 2013 Common stock SeaDor USD ($)	Jul. 29, 2013 Common stock SeaDor NOK	Apr. 25, 2014 Common stock Private placement	Feb. 12, 2014 Common stock Private placement	Nov. 26, 2013 Common stock Private placement	Jul. 29, 2013 Common stock Private placement	Apr. 25, 2014 Common stock Private placement USD ($)	Apr. 25, 2014 Common stock Private placement NOK	Feb. 12, 2014 Common stock Private placement USD ($)	Feb. 12, 2014 Common stock Private placement NOK	Nov. 26, 2013 Common stock Private placement USD ($)	Nov. 26, 2013 Common stock Private placement NOK	Jul. 29, 2013 Common stock Private placement USD ($)	Jul. 29, 2013 Common stock Private placement NOK
Common Stock.
Authorized capital stock (in shares)			500,000,000lpg_CapitalStockSharesAuthorized
Par value of capital stock (in dollars per share)			$ 0.01
Common stock, shares authorized	450,000,000us-gaap_CommonStockSharesAuthorized	450,000,000us-gaap_CommonStockSharesAuthorized	450,000,000us-gaap_CommonStockSharesAuthorized
Preferred stock, shares authorized	50,000,000us-gaap_PreferredStockSharesAuthorized	50,000,000us-gaap_PreferredStockSharesAuthorized	50,000,000us-gaap_PreferredStockSharesAuthorized
Common Stock
Shares issued				245,521	7,105,263	1,412,698	5,649,200	24,071,506	18,644,324	100			4,667,135	100			7,990,425	4,667,135			1,412,698	5,649,200	16,081,081	9,310,054
Value of common stock (per share)															$ 12.66	75.00			$ 12.66	75.00					$ 18.40	110.00	$ 17.92	110.00	$ 15.16	92.50	$ 12.66	75.00
Number of votes entitled to shareholders	1lpg_NumberOfVotesEntitledToShareholders
Reverse stock split ratio						0.2
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01										$ 0.01
Shares cancelled						19			100		19
Common stock, shares outstanding	58,057,493us-gaap_CommonStockSharesOutstanding	48,365,011us-gaap_CommonStockSharesOutstanding									241,825,149	48,365,011
Number of fractional shares issued in connection with the reverse stock split						0