Amount of consideration settled.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The maximum amount of common shares that can be sold under a common shares purchase agreement.

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Amount of the required installment payment for other commitment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The percentage of shares to be acquired in the SPV.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Percentage of construction costs of Newbuilding MR Tanker to be financed under the financing facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	rubi_
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Balance Type:	na
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- Definition

Percentage of the net cash proceeds from debt financings or equity issuances that the company is contractually required to apply toward payment of the consideration under the share purchase agreement.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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

- Definition

Daily rate charged to the lessee for the vessel under the time charter agreement.

+ References

No definition available.

+ Details

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

- Definition

Volumetric capacity of a shipping container.

+ References

No definition available.

+ Details

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Namespace Prefix:	rubi_
Data Type:	dtr-types:massItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
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-Subparagraph (a)(3)
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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from the additional capital contribution to the entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Lease term for sale and leaseback transaction, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	na
Period Type:	duration

- Details

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- Details

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Subsequent Events (Details) $ in Thousands			1 Months Ended	6 Months Ended
Subsequent Events (Details) $ in Thousands	Jul. 27, 2026 USD ($) t	Jul. 13, 2026 USD ($) t	Jul. 31, 2026 USD ($) shares	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Aug. 14, 2026 USD ($)	Aug. 05, 2026 USD ($)	Apr. 20, 2026 USD ($)
Subsequent Events [Abstract]
Gross proceeds from issuance of common shares				$ 32,500	$ 0
Equity Line Purchase Agreement [Member]
Subsequent Events [Abstract]
Gross proceeds from issuance of common shares				$ 18,368
2026 Equity Line Purchase Agreement [Member]
Subsequent Events [Abstract]
Maximum amount of common shares that can be sold								$ 50,000
Subsequent Event [Member]
Subsequent Events [Abstract]
Installment payment to shipyard	$ 13,560
Subsequent Event [Member] \| Equity Line Purchase Agreement [Member]
Subsequent Events [Abstract]
Shares issued (in shares) \| shares			973,788
Gross proceeds from issuance of common shares			$ 4,236
Subsequent Event [Member] \| 2026 Equity Line Purchase Agreement [Member]
Subsequent Events [Abstract]
Shares issued (in shares) \| shares			119,721
Gross proceeds from issuance of common shares			$ 276
Subsequent Event [Member] \| ATM [Member]
Subsequent Events [Abstract]
Maximum amount of common shares that can be sold							$ 25,000
Subsequent Event [Member] \| Second Newbuilding MR Tanker [Member]
Subsequent Events [Abstract]
Vessel capacity \| t		47,499
Installment payment to shipyard		$ 6,780
Percentage of construction costs of Newbuilding MR Tanker to be financed		85.00%
Subsequent Event [Member] \| Second Newbuilding MR Tanker [Member] \| Trafigura [Member]
Subsequent Events [Abstract]
Daily time charter rate		$ 18,750
Term of time charter		7 years
Term of time charter extension		4 years
Subsequent Event [Member] \| Third Newbuilding MR Tanker [Member]
Subsequent Events [Abstract]
Vessel capacity \| t	47,499
Installment payment to shipyard	$ 6,780
Percentage of construction costs of Newbuilding MR Tanker to be financed	85.00%
Subsequent Event [Member] \| Third Newbuilding MR Tanker [Member] \| Trafigura [Member]
Subsequent Events [Abstract]
Daily time charter rate	$ 18,750
Term of time charter	7 years
Term of time charter extension	4 years
Subsequent Event [Member] \| Second MR SPV [Member] \| Related Party [Member] \| Former Parent [Member]
Subsequent Events [Abstract]
Ownership percentage to be acquired		100.00%
Purchase price		$ 6,250
Consideration settled						$ 6,250
Subsequent Event [Member] \| Third MR SVP [Member] \| Related Party [Member] \| Former Parent [Member]
Subsequent Events [Abstract]
Ownership percentage to be acquired	100.00%
Purchase price	$ 6,500
Percentage of net cash proceeds to be applied to payment of consideration	100.00%
Consideration settled						$ 300