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Debt - Summary of the Company's Debt (Parenthetical) (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Unamortized debt issuance costs | $ 8,215 | $ 9,512
RMR II revolving warehouse credit facility |  |
Debt Instrument [Line Items] |  |
Unamortized debt issuance costs |  | 900
RMR IV revolving warehouse credit facility |  |
Debt Instrument [Line Items] |  |
Unamortized debt issuance costs | 400 | 338
RMR V revolving warehouse credit facility |  |
Debt Instrument [Line Items] |  |
Unamortized debt issuance costs | 400 | $ 400
RMR VI revolving warehouse credit facility |  |
Debt Instrument [Line Items] |  |
Unamortized debt issuance costs | $ 900 |

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