XML 64 R57.htm IDEA: XBRL DOCUMENT v3.26.1

Debt - Summary of Company's Revolving Credit Facilities (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
Line of Credit Facility [Line Items]
Debt Balance		$ 1,621,398	$ 1,650,764
Restricted Cash Reserves		98,364	94,174	$ 122,312
Senior
Line of Credit Facility [Line Items]
Total Credit Facility	[1]	355,000
Debt Balance	[1]	$ 200,101
Advance Rate Cap	[1]	83.00%
Current Advance Rate	[1]	70.00%
Revolving Period End Date		2028-08
Maturity Date	[1]	2028-08
Revolving credit facilities
Line of Credit Facility [Line Items]
Total Credit Facility		$ 780,000
Debt Balance		266,073	$ 270,186
Restricted Cash Reserves		$ 532
Maximum [Member] | Senior
Line of Credit Facility [Line Items]
Unused Commitment Fee	[1]	0.90%
Minimum [Member] | Senior
Line of Credit Facility [Line Items]
Unused Commitment Fee	[1]	0.30%
RMR IV warehouse
Line of Credit Facility [Line Items]
Total Credit Facility		$ 125,000
Debt Balance		17,223
Restricted Cash Reserves		$ 218
Advance Rate Cap		79.00%
Current Advance Rate		79.00%
Unused Commitment Fee		0.50%
Revolving Period End Date		2026-05
Maturity Date		2027-05
RMR V warehouse
Line of Credit Facility [Line Items]
Total Credit Facility		$ 100,000
Debt Balance		16,028
Restricted Cash Reserves		$ 99
Advance Rate Cap		80.00%
Current Advance Rate		80.00%
Revolving Period End Date		2026-11
Maturity Date		2027-11
RMR V warehouse | Maximum [Member]
Line of Credit Facility [Line Items]
Unused Commitment Fee		0.70%
RMR V warehouse | Minimum [Member]
Line of Credit Facility [Line Items]
Unused Commitment Fee		0.40%
RMR VI warehouse
Line of Credit Facility [Line Items]
Total Credit Facility		$ 75,000
Debt Balance		17,476
Restricted Cash Reserves		$ 116
Advance Rate Cap		75.00%
Current Advance Rate		75.00%
Unused Commitment Fee		0.50%
Revolving Period End Date		2027-02
Maturity Date		2028-02
RMR VII warehouse
Line of Credit Facility [Line Items]
Total Credit Facility		$ 125,000
Debt Balance		15,245
Restricted Cash Reserves		$ 99
Advance Rate Cap		76.00%
Current Advance Rate		76.00%
Revolving Period End Date		2026-10
Maturity Date		2026-10
RMR VII warehouse | Maximum [Member]
Line of Credit Facility [Line Items]
Unused Commitment Fee		0.70%
RMR VII warehouse | Minimum [Member]
Line of Credit Facility [Line Items]
Unused Commitment Fee		0.40%
[1] The senior revolving credit facility has an additional advance rate cap of 60% of eligible delinquent renewals. As of March 31, 2026, this advance rate was 47%.

X

- Definition

The standard percentage of eligible secured finance receivables that is available to be advanced from credit facility.

+ References

No definition available.

+ Details

Name:	rm_AdvancesOnDebtAgreementEligibleSecuredFinanceReceivables
Namespace Prefix:	rm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Debt current advance rate.

+ References

No definition available.

+ Details

Name:	rm_DebtCurrentAdvanceRate
Namespace Prefix:	rm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The maturity date of the amortizing loan credit agreement, in CCYY-MM format.

+ References

No definition available.

+ Details

Name:	rm_DebtInstrumentMaturityMonthAndYear
Namespace Prefix:	rm_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Debt instrument revolving period end month and year.

+ References

No definition available.

+ Details

Name:	rm_DebtInstrumentRevolvingPeriodEndMonthAndYear
Namespace Prefix:	rm_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-4

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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

X

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of cash and cash equivalent restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-8

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(1)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-4

+ Details

Name:	us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_CreditFacilityAxis=rm_SeniorRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=rm_RMRIVRevolvingWarehouseCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=rm_RMRVRevolvingWarehouseCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=rm_RMRVIRevolvingWarehouseCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=rm_RMRVIIRevolvingWarehouseCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: