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Subsequent Events - Additional Information (Detail) - USD ($) | 1 Months Ended | 3 Months Ended
--- | --- | ---
May 31, 2023 | Apr. 30, 2023 | Mar. 31, 2023 | Mar. 31, 2022
Subsequent Event [Line Items] |  |  |  |
Advances on securitizations |  |  | $ 0 | $ 250,000,000
Subsequent Event | Quarterly Cash Dividend |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Cash dividend per share | $ 0.30 |  |  |
Dividends payable, date to be paid | Jun. 14, 2023 |  |  |
Dividend date of record | May 24, 2023 |  |  |
Dividend date of declaration | 2023-05 |  |  |
Subsequent Event | RMR VII revolving warehouse credit facility |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt revolving period end date |  | 2024-10 |  |
Percentage of advances on debt agreement eligible secured finance receivables |  | 80.00% |  |
Secured line of credit |  | $ 75,000,000 |  |
Line of credit facility, description |  | The facility converts to an amortizing loan in October 2024 and terminates in October 2025. The debt will be secured by finance receivables and other related assets that the Company will purchase from its affiliates, which the Company will sell and transfer to RMR VII. 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 rate equal to one-month SOFR, plus (i) 0.10% per annum, (ii) a margin of 3.00%, and (iii) the applicable step-up margin (0.00% during the revolving period). RMR VII pays a monthly unused commitment fee ranging between 0.45% and 0.65%. |  |
Debt maturity date |  | 2025-10 |  |
Subsequent Event | RMR IV Revolving Warehouse Credit Facility Amendment |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt revolving period end date |  | 2023-05 |  |
Line of credit facility, description |  | In April 2023, the Company and its wholly-owned SPE, RMR IV, entered into an amendment that extends the date at which the facility converts to an amortizing loan from April 2023 to May 2023. |  |
Subsequent Event | Secured Overnight Financing Rate (“SOFR”) | RMR VII revolving warehouse credit facility |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Interest rate, basis spread |  | 3.00% |  |
Interest rate |  | 0.10% |  |
Subsequent Event | Maximum | RMR VII revolving warehouse credit facility |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Unused line fee |  | 0.65% |  |
Subsequent Event | Minimum | RMR VII revolving warehouse credit facility |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Unused line fee |  | 0.45% |  |

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- Definition The maturity date of the amortizing loan credit agreement, in CCYY-MM format. + References No definition available. + Details
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- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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- Definition Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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