Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.24.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Investment, cost $ 3,725,960,000 [1] $ 3,773,752,000 [2]
Deferred financing costs, accumulated amortization $ 12,329,000 $ 10,603,000
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 150,000,000 150,000,000
Common stock, shares issued (in shares) 78,463,599 84,830,679
Common stock, shares outstanding (in shares) 78,463,599 84,830,679
Unsecured Notes | July 2026 Notes    
Debt instrument, par value $ 500,000,000 $ 500,000,000
Unsecured Notes | May 2024 Notes    
Debt instrument, par value 450,000,000 450,000,000
Unsecured Notes | SBIC Debentures    
Debt instrument, par value 350,000,000 350,000,000
Debt, due within one year 63,800,000  
Unsecured Notes | December 2025 Notes    
Debt instrument, par value 150,000,000 100,000,000
Control investments    
Investment, cost 1,435,131,000 [1],[3] 1,270,802,000 [2],[4]
Affiliate investments    
Investment, cost 575,894,000 [1],[5] 635,536,000 [2],[6]
Non‑Control/Non‑Affiliate investments    
Investment, cost $ 1,714,935,000 [1],[7] $ 1,867,414,000 [2],[8]
[1] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.
[2] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.
[3] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.
[4] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.
[5] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments.
[6] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments.
[7] Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
[8] Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.