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INCOME TAXES - Schedule of Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Deferred Tax Assets, Valuation Allowance [Roll Forward]
Valuation allowance as of beginning of the year	$ 93.6	$ 0.7
Increases recorded to income tax provision	19.4	92.9
Valuation allowance as of end of year	$ 113.0	$ 93.6

X

- Definition

Deferred Tax Assets, Valuation Allowance

+ References

No definition available.

+ Details

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Namespace Prefix:	rmbl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Valuation Allowance, Deferred Tax Asset, Increase, Amount

+ References

No definition available.

+ Details

Name:	rmbl_ValuationAllowanceDeferredTaxAssetIncreaseAmount
Namespace Prefix:	rmbl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

+ Details

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