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SUPPLEMENTAL CASH FLOW INFORMATION - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Supplemental Cash Flow Information [Abstract] |  |
Interest paid to finance floor plan inventory | $ 15.4 | $ 12.5

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- Definition Interest Paid, Excluding Capitalized Interset, Financing Activities + References No definition available. + Details
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Namespace Prefix: | rmbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration