XML 46 R45.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Financial Instruments and Fair Value Disclosures (Carrying and FV) (Details) - USD ($) | Dec. 31, 2019 | Mar. 31, 2019
--- | --- | ---
Fair value |  |
Carrying Value | $ 650,273,417 | $ 696,090,786
Corsair Japanese Financing |  |
Fair value |  |
Carrying Value | 44,958,333 | 47,395,833
Corsair Japanese Financing | Level 2 |  |
Fair value |  |
Fair Value | 47,063,504 | 45,901,900
Concorde Japanese Financing |  |
Fair value |  |
Carrying Value | 49,538,462 | 51,961,538
Concorde Japanese Financing | Level 2 |  |
Fair value |  |
Fair Value | 52,040,924 | 50,176,288
Corvette Japanese Financing |  |
Fair value |  |
Carrying Value | 50,076,923 | 52,500,000
Corvette Japanese Financing | Level 2 |  |
Fair value |  |
Fair Value | 52,630,327 | 50,671,689
CJNP Japanese Financing |  |
Fair value |  |
Carrying Value | 19,420,625 | 20,506,250
CJNP Japanese Financing | Level 2 |  |
Fair value |  |
Fair Value | 20,712,784 | 20,918,881
CMNL Japanese Financing |  |
Fair value |  |
Carrying Value | 18,418,899 | 19,446,131
CMNL Japanese Financing | Level 2 |  |
Fair value |  |
Fair Value | 19,843,518 | 19,862,056
CNML Japanese Financing |  |
Fair value |  |
Carrying Value | 20,612,351 | 21,666,369
CNML Japanese Financing | Level 2 |  |
Fair value |  |
Fair Value | $ 22,236,801 | $ 22,137,090

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lpg_RefinancedCorsairDebtLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lpg_ConcordeJapaneseFinancingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lpg_CorvetteJapaneseFinancingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lpg_CJNPJapaneseFinancingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lpg_CMNLJapaneseFinancingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lpg_CNMLJapaneseFinancingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |