Name:	rbne_FundingPeriodForAdvanceToCoverVesselDailyOperatingCosts
Namespace Prefix:	rbne_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Minimum value of shares and/or other securities issued by an entity engaged in the maritime industry upon which the Company would be required to pay a commission if such shares and/or other securities are acquired or sold..

No definition available.

Name:	rbne_MinimumValueOfSharesIssuedByEntityEngagedInMaritimeIndustry
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

No definition available.

Name:	rbne_RelatedPartyAdministrationFees
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

Name:	rbne_RelatedPartyTransactionAbstract
Namespace Prefix:	rbne_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Capital raising commission charged by a related party applicable to the total consideration of acquiring or selling shares and/or other securities, including equity and debt instruments.

No definition available.

Name:	rbne_RelatedPartyTransactionCapitalRaisingCommission
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

A commission rate charged by a related party on all gross proceeds related to capital raised in capital and debt markets.

No definition available.

Name:	rbne_RelatedPartyTransactionCapitalRaisingCommissionRate
Namespace Prefix:	rbne_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The percentage of the gross charter hire, freight and the ballast bonus earned under a charter charged as a commission to the Company by a related party.

No definition available.

Name:	rbne_RelatedPartyTransactionCommissionRate
Namespace Prefix:	rbne_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

A commission charged by a related party in connection with each vessel sale and purchase transaction.

No definition available.

Name:	rbne_RelatedPartyTransactionCommissionRateOnEachVesselSaleAndPurchaseTransaction
Namespace Prefix:	rbne_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Commissions paid to a related party broker on time-charter and voyage-charter arrangements.

No definition available.

Name:	rbne_RelatedPartyTransactionCommissions
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Fixed daily fee charged by a related party to provide a wide range of shipping services such as crew management, technical management, operational employment management, insurance arrangements, provisioning, bunkering, accounting services, general administration and audit support.

No definition available.

Name:	rbne_RelatedPartyTransactionFixedDailyFee
Namespace Prefix:	rbne_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

Fees paid to related parties for providing a wide range of shipping services such as crew management, technical management, operational employment management, insurance arrangements, provisioning, bunkering, accounting services, general administration and audit support.

No definition available.

Name:	rbne_RelatedPartyTransactionManagementFees
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Recovery fee multiplier applied to the total amount of the flat management fee calculated on an annual basis under an agreement with a related party.

No definition available.

Name:	rbne_RelatedPartyTransactionManagementRecoveryFeeMultiplier
Namespace Prefix:	rbne_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

Termination fee multiplier applied to the total amount of the flat management fee and the per vessel management fee calculated on an annual basis under an agreement with a related party.

No definition available.

Name:	rbne_RelatedPartyTransactionManagementTerminationFeeMultiplier
Namespace Prefix:	rbne_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

Fixed quarterly fee charged by a related party to provide a shipping related administrative services.

No definition available.

Name:	rbne_RelatedPartyTransactionQuarterlyManagementFee
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Term of related party agreement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	rbne_RelatedPartyTransactionRenewalTermOfAgreement
Namespace Prefix:	rbne_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Amount of commission charged by related party for any sale or purchase of vessels for the Company.

No definition available.

Name:	rbne_RelatedPartyTransactionSaleAndPurchaseCommission
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Term of related party agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	rbne_RelatedPartyTransactionTermOfAgreement
Namespace Prefix:	rbne_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Sale and purchase brokerage commission charged by a related party applicable to the total consideration of acquiring or selling shares and/or other securities, including equity and debt instruments.

No definition available.

Name:	rbne_SaleAndPurchaseBrokerageCommission
Namespace Prefix:	rbne_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount, after allowance for credit loss, of receivable classified as other and noncurrent.

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

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

Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

No definition available.

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

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	srt_CounterpartyNameAxis=rbne_CastorShipsSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=rbne_LPGDreamTerraxMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=rbne_LPGDreamSyraxMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RelatedPartyTransactionAxis=rbne_MasterManagementAgreementMember
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Data Type:	na
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Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
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