Consolidated Statements of Assets And Liabilities (Parenthetical) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Investment owned, at cost | $ 2,143,830 | $ 2,154,739 |
| Cash equivalents at cost | 388,944 | 348,585 |
| Debt instrument, face amount | 1,145,443 | 1,154,436 |
| Debt issuance costs | $ 7,236 | $ 8,082 |
| Common stock, par or stated value per share | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 200,000,000 | 200,000,000 |
| Common stock, shares, issued | 54,554,634 | 54,554,634 |
| Common stock, shares, outstanding | 54,554,634 | 54,554,634 |
| Companies less than 5% owned [Member] | ||
| Investment owned, at cost | $ 1,073,426 | $ 1,092,009 |
| Companies 5% to 25% owned [Member] | ||
| Investment owned, at cost | 110,951 | 109,346 |
| Companies more than 25% owned [Member] | ||
| Investment owned, at cost | $ 959,453 | $ 953,384 |
| X | ||||||||||
- Definition Cash equivalents, at cost. No definition available.
|
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Cost of the investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|