XML 43 R36.htm IDEA: XBRL DOCUMENT v3.25.1

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2025
Significant Accounting Policies [Line Items]
Contractual delinquent period of loans	180 days
Bankruptcy delinquency threshold	60 days
Delinquency interest accrual cessation	90 days
Threshold period to write off financing receivable	90 days

X

- Definition

Threshold period past due for non-titled accounts in a confirmed bankruptcy to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	rm_BankruptcyThresholdPeriodPastDueForWriteOffOfFinancingReceivables
Namespace Prefix:	rm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of days contractually past due before interest ceases accruing.

+ References

No definition available.

+ Details

Name:	rm_FinanceReceivablesIncomeRecognitionContractualDelinquentPeriod
Namespace Prefix:	rm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Disclosure of significant accounting policies used in preparing the financial statements.

+ References

No definition available.

+ Details

Name:	rm_SignificantAccountingPoliciesLineItems
Namespace Prefix:	rm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Threshold period past due for financing receivable to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	rm_ThresholdPeriodPastDueForWriteOffOfFinancingReceivables
Namespace Prefix:	rm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-14

+ Details

Name:	us-gaap_FinancingReceivableThresholdPeriodPastDueWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant