Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.22.2.2
Consolidated Balance Sheets (Parenthetical) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Investment, cost $ 3,689,627,000 $ 3,259,246,000 [1],[2],[3]
Deferred financing costs, accumulated amortization $ 10,203,000 $ 9,462,000
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 outstanding (in shares) 76,155,807 70,700,885
Common stock, shares issued (in shares) 76,155,807 70,700,885
3.00% Notes due 2026    
Debt instrument, interest rate, stated percentage 3.00%  
3.00% Notes due 2026 | Unsecured Notes    
Debt instrument, interest rate, stated percentage 3.00% 3.00%
Debt instrument, par value $ 500,000,000 $ 500,000,000
5.20% Notes due 2024 | Unsecured Notes    
Debt instrument, interest rate, stated percentage 5.20% 5.20%
Debt instrument, par value $ 450,000,000 $ 450,000,000
SBIC Debentures | Unsecured Notes    
Debt instrument, par value 350,000,000 350,000,000
Debt, due within one year $ 16,000,000 $ 16,000,000
4.50% Notes due 2022 | Unsecured Notes    
Debt instrument, interest rate, stated percentage 4.50% 4.50%
Debt instrument, par value $ 185,000,000 $ 185,000,000
Control investments    
Investment, cost [4] 1,199,446,000 [5] 1,107,597,000 [3]
Affiliate investments    
Investment, cost 576,047,000 [5] 578,539,000 [3],[6]
Non‑Control/Non‑Affiliate investments    
Investment, cost $ 1,914,134,000 $ 1,573,110,000 [3],[7]
[1] All investments are Lower Middle Market portfolio investments, unless otherwise noted. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Lower Middle Market portfolio investments. All of the Company’s investments, unless otherwise noted, are encumbered either as security for the Company’s Credit Facility or in support of the SBA-guaranteed debentures issued by the Funds.
[2] All portfolio company headquarters are based in the United States, unless otherwise noted.
[3] Principal is net of repayments. Cost is net of repayments and accumulated unearned income.
[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] 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.
[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.