Fair Value Measurement - Summary of Reconciliation of Level 3 Assets (Parenthetical) (Details) - Level 3 - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2024 |
Dec. 31, 2023 |
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Fair value, net change in unrealized appreciation | $ (6,628) | |
| Fair value, net change in unrealized depreciation | $ (2,538) | |
| Debt | ||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Fair value, net change in unrealized appreciation | (4,913) | |
| Fair value, net change in unrealized depreciation | (2,178) | |
| Equity/Other | ||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Fair value, net change in unrealized appreciation | $ (1,715) | |
| Fair value, net change in unrealized depreciation | $ (360) |