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Commitments and Contingencies - Schedule of Contractual Obligations (Parenthetical) (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Commitments And Contingencies [Line Items] |  |  |
Principal |  | $ 1,733,000 | $ 1,594,000
SMBC Facility |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 197,000 | 72,000
MUFG Bank Facility |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 121,000 | 107,000
SBA Debentures |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal | [1] | 175,000 | 175,000
July 2024 Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 105,000 | 105,000
February 2025 Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 50,000 | 50,000
June 2025 Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 70,000 | 70,000
June 2025 3-Year Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 50,000 | 50,000
March 2026 A Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 50,000 | 50,000
March 2026 B Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 50,000 | 50,000
2031 Asset-Backed Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 150,000 | 150,000
2033 Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 40,000 | 40,000
September 2026 Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | 325,000 | 325,000
January 2027 Notes |  |  |
Commitments And Contingencies [Line Items] |  |  |
Principal |  | $ 350,000 | $ 350,000
[1] | Availability subject to the Company meeting the borrowing base requirements.

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