Amount of New Yacht Consideration settled.

No definition available.

Name:	rubi_ConsiderationSettled
Namespace Prefix:	rubi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of commission charged as a newbuilding vessels monitoring fee by a related party.

+ References

No definition available.

+ Details

Name:	rubi_NewbuildingVesselsMonitoringFee
Namespace Prefix:	rubi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Consideration paid to a related party for signing a non-binding letter of intent whereby the seller/related party is precluded from marketing or selling a motor yacht.

+ References

No definition available.

+ Details

Name:	rubi_NoShopClauseConsiderationPaid
Namespace Prefix:	rubi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Ownership percentage of a motor yacht.

+ References

No definition available.

+ Details

Name:	rubi_OwnershipPercentageOfYacht
Namespace Prefix:	rubi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	rubi_RelatedPartyExpensesAbstract
Namespace Prefix:	rubi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period following the Company's entry into a Newbuilding Share Purchase Agreement to settle remaining balance of consideration for Newbuilding Yacht, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	rubi_SettlementPeriod
Namespace Prefix:	rubi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Purchase price of expected asset acquisition prior to consideration being transferred. Excludes business acquisition.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 15
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480123/805-50-15-3

+ Details

Name:	us-gaap_AssetAcquisitionPriceOfAcquisitionExpected
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of commitment classified as other to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

+ Details

Name:	us-gaap_OtherCommitmentDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow from the acquisition of or improvements to long-lived, physical assets used to produce goods and services and not intended for resale, classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

+ Details

Name:	us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

- Details

Name:	srt_CounterpartyNameAxis=rubi_TopShipsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_OtherCommitmentsAxis=rubi_CommitmentsUnderNewbuildingProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=rubi_RomanExplorerIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AssetAcquisitionAxis=rubi_MYSanlorenzoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=rubi_CentralShippingIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Transactions with Related Parties, Advances for Asset Acquisitions (Details) - USD ($) $ in Thousands			12 Months Ended
	Dec. 31, 2025	Dec. 04, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Mar. 20, 2026
Transactions with Related Parties [Abstract]
Payment made on SPA signing date			$ 19,932	$ 0	$ 0
Related Party [Member] \| Former Parent [Member]
Transactions with Related Parties [Abstract]
LOI advance		$ 4,000
Consideration settled for Newbuilding Yacht	$ 19,500		19,500
Payment made on SPA signing date	15,500
Related Party [Member] \| Former Parent [Member] \| Subsequent Event [Member]
Transactions with Related Parties [Abstract]
Consideration settled for Newbuilding Yacht						$ 23,500
Related Party [Member] \| Former Parent [Member] \| Commitment under Newbuilding Program [Member]
Transactions with Related Parties [Abstract]
Contractual commitment payable in 2026	$ 18,500		$ 18,500
Settlement period			300 days
Related Party [Member] \| Roman Explorer Inc. [Member] \| Newbuilding Yacht [Member]
Transactions with Related Parties [Abstract]
Ownership percentage of Newbuilding Yacht	100.00%		100.00%
Consideration for Newbuilding Yacht			$ 38,000
Related Party [Member] \| CSI [Member]
Transactions with Related Parties [Abstract]
Newbuilding vessels monitoring fee			$ 432