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Debt - Additional Information (Detail) - USD ($) $ in Thousands | 5 Months Ended | 6 Months Ended | 7 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Jun. 30, 2021 | Jul. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2019
Line of Credit Facility [Line Items] |  |  |  |  |
Cash | $ 8,052 | $ 6,086 |  | $ 8,973 | $ 2,263
Commitment fee description |  | The Company pays an unused line fee between 0.375% and 0.65% based upon the average outstanding balance of the facility. |  |  |
Cash deposited to restricted cash reserve account | 63,824 | $ 99,920 |  | $ 54,423 | $ 54,164
Private offering of investment grade asset-backed notes |  | 200,000 |  |  |
RMR II Revolving Warehouse Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Cash deposited to restricted cash reserve account |  | $ 600 |  |  |
Debt revolving period end date |  | 2023-03 |  |  |
Debt maturity date |  | 2024-03 |  |  |
Debt Instrument, Description of Variable Rate Basis |  | which borrowings under the facility bear interest, payable monthly, at a blended rate equal to three-month LIBOR, with a LIBOR floor of 0.25%, plus a margin of 2.35% (2.15% prior to the April 2021 amendment). The debt is secured by finance receivables and other related assets that the Company purchased from its affiliates, which the Company then sold and transferred to RMR II. |  |  |
RMR IV revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Secured line of credit |  | $ 125 |  |  |
Percentage of advances on debt agreement eligible secured finance receivables |  | 81.00% |  |  |
Cash deposited to restricted cash reserve account |  | $ 800 |  |  |
Debt revolving period end date |  | 2023-04 |  |  |
Debt maturity date |  | 2024-04 |  |  |
Line of credit facility, description |  | The facility converts to an amortizing loan in April 2023 and terminates in April 2024. The debt is secured by finance receivables and other related assets that the Company purchased from its affiliates, which the Company then sold and transferred to RMR IV. Advances on the facility are capped at 81% of eligible finance receivables |  |  |
Line of credit facility, interest rate description |  | Borrowings under the facility bear interest, payable monthly, at a blended rate equal to one-month LIBOR, plus a margin of 2.35%. The one-month LIBOR was 0.10% at June 30, 2021. RMR IV pays an unused commitment fee between 0.35% and 0.70% based upon the average daily utilization of the facility. |  |  |
RMR V revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Secured line of credit |  | $ 100 |  |  |
Percentage of advances on debt agreement eligible secured finance receivables |  | 80.00% |  |  |
Cash deposited to restricted cash reserve account |  | $ 500 |  |  |
Debt revolving period end date |  | 2022-10 |  |  |
Debt maturity date |  | 2023-10 |  |  |
Line of credit facility, description |  | The facility converts to an amortizing loan in October 2022 and terminates in October 2023. The debt is secured by finance receivables and other related assets that the Company purchased from its affiliates, which the Company then sold and transferred to RMR V. Advances on the facility are capped at 80% of eligible finance receivables |  |  |
Line of credit facility, interest rate description |  | Borrowings under the facility bear interest, payable monthly, at a per annum rate, which in the case of a conduit lender is the commercial paper rate, plus a margin of 2.20%. The commercial paper rate was 0.15% at June 30, 2021. RMR V pays an unused commitment fee between 0.45% and 0.75% based upon the average daily utilization of the facility |  |  |
RMIT 2019-1 securitization |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Cash deposited to restricted cash reserve account |  | $ 1,400 |  |  |
Debt revolving period end date |  | 2021-10 |  |  |
Debt maturity date |  | 2028-11 |  |  |
Weighted average rate |  | 3.17% |  |  |
Private offering of investment grade asset-backed notes |  | $ 130,000 |  |  |
Debt Instrument Payment Terms |  | Prior to maturity in November 2028, the Company may redeem the notes in full, but not in part, at its option on any note payment date on or after the payment date occurring in November 2021. No payments of principal of the notes will be made during the revolving period. |  |  |
RMIT 2020-1 securitization |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Cash deposited to restricted cash reserve account |  | $ 1,900 |  |  |
Debt revolving period end date |  | 2023-09 |  |  |
Debt maturity date |  | 2030-10 |  |  |
Weighted average rate |  | 2.85% |  |  |
Private offering of investment grade asset-backed notes |  | $ 180,000 |  |  |
Debt Instrument Payment Terms |  | Prior to maturity in October 2030, the Company may redeem the notes in full, but not in part, at its option on any note payment date on or after the payment date occurring in October 2023. No payments of principal of the notes will be made during the revolving period |  |  |
RMIT 2021-1 securitization |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Cash deposited to restricted cash reserve account |  | $ 2,600 |  |  |
Debt revolving period end date |  | 2024-02 |  |  |
Debt maturity date |  | 2031-03 |  |  |
Weighted average rate |  | 2.08% |  |  |
Private offering of investment grade asset-backed notes |  | $ 249,000 |  |  |
Debt Instrument Payment Terms |  | Prior to maturity in March 2031, the Company may redeem the notes in full, but not in part, at its option on any note payment date on or after the payment date occurring in March 2024. No payments of principal of the notes will be made during the revolving period |  |  |
Contractual Priority Payments [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Cash deposited to restricted cash reserve account | $ 46,600 | $ 77,400 |  |  |
Minimum [Member] | RMR II Revolving Warehouse Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Percentage of advances on debt agreement eligible secured finance receivables |  | 80.00% |  |  |
Decrease in total facility |  | $ 75,000 |  |  |
Minimum [Member] | Revolving Warehouse Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.35% |  |  |
Minimum [Member] | RMR IV revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.35% |  |  |
Minimum [Member] | RMR V revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.45% |  |  |
Maximum [Member] | RMR II Revolving Warehouse Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Percentage of advances on debt agreement eligible secured finance receivables |  | 83.00% |  |  |
Decrease in total facility |  | $ 125,000 |  |  |
Maximum [Member] | Revolving Warehouse Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.85% |  |  |
Maximum [Member] | RMR IV revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.70% |  |  |
Maximum [Member] | RMR V revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.75% |  |  |
London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Interest rate, basis spread |  | 3.00% |  |  |
Interest rate | 0.14% | 0.10% |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Revolving Warehouse Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Interest rate | 0.24% | 0.15% |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Effective interest rate on line of credit |  | 1.00% |  |  |
Unrestricted Cash Member |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Cash |  | $ 6,100 |  |  |
Debt Instrument Variable Rate Base Condition [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Interest rate, basis spread |  | 3.25% |  |  |
Debt Instrument Variable Rate Base Condition Two | London Interbank Offered Rate (LIBOR) [Member] | Revolving Warehouse Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Interest rate, basis spread | 2.35% |  | 2.15% |  |
Debt Instrument Variable Rate Base Condition Two | London Interbank Offered Rate (LIBOR) [Member] | RMR IV revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Weighted average rate |  | 2.35% |  |  |
Debt Instrument Variable Rate Base Condition Two | London Interbank Offered Rate (LIBOR) [Member] | RMR V revolving warehouse credit facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Weighted average rate |  | 2.20% |  |  |
Revolving Credit Facility [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Secured line of credit |  | $ 640,000 |  |  |
Line of credit facility, accordion feature |  | $ 650,000 |  |  |
Percentage of advances on debt agreement eligible secured finance receivables |  | 85.00% |  |  |
Percentage of advances on debt agreement eligible unsecured finance receivables |  | 80.00% |  |  |
Percentage of advances on debt agreement eligible delinquent renewals of finance receivables |  | 60.00% |  |  |
Current percentage of advances on eligible secured finance receivables |  | 84.00% |  |  |
Current percentage of advances on eligible unsecured finance receivables |  | 79.00% |  |  |
Current percentage of advances on eligible delinquent renewals of finance receivables |  | 59.00% |  |  |
Credit facility, eligible borrowing capacity |  | $ 195,400 |  |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.375% |  |  |
Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Unused line fee |  | 0.65% |  |  |
Revolving Credit Facility [Member] | Senior Revolving Credit Facility Prior To September Twenty Two Thousand Nineteen |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Secured line of credit |  | $ 638,000 |  |  |
Debt agreement expiration date |  | Jun. 30, 2020 |  |  |
Revolving Credit Facility [Member] | Senior Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt agreement expiration date |  | Sep. 30, 2022 |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840 + Details
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