CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2025		Mar. 31, 2025
Cost	$ 1,798,438	[1],[2],[3],[4],[5]	$ 1,779,360	[6],[7],[8],[9],[10],[11]
Accumulated amortization	11,061		10,357
Unamortized debt issuance costs	$ 12,925		$ 13,810
Common stock, par value (in usd per share)	$ 0.25		$ 0.25
Common stock, authorized (in shares)	75,000,000		75,000,000
Common stock, issued (in shares)	55,227,370		52,912,796
Common stock, outstanding (in shares)	55,227,370		52,912,796
SBA Debentures
Unamortized debt issuance costs	$ 3,885		$ 4,082
October 2026 Notes
Unamortized debt issuance costs	962		1,154
August 2028 Notes
Unamortized debt issuance costs	1,555		1,681
2029 Convertible Notes
Unamortized debt issuance costs	6,523		6,893
Non-control/Non-affiliate investments
Cost	1,438,979		1,403,623
Affiliate investments
Cost	287,517		304,824
Control investments
Cost	$ 71,942		$ 70,913

[1] All debt investments are income-producing, unless otherwise noted. Equity investments are non-income producing, unless otherwise noted. All amounts are stated in U.S. Dollars.

[2] Non-Control/Non-Affiliate investments are generally defined by the 1940 Act as investments that are neither control investments nor affiliate investments. Investments are classified as non-control/non-affiliate investments, unless otherwise noted. At June 30, 2025, the Company held $1,449.5 million of non-control/non-affiliate investments, which represented approximately 81.4% of the Company’s investment assets. The fair value of these investments as a percent of net assets is 158.1%.

[3] As of June 30, 2025, the cumulative gross unrealized appreciation for U.S. federal income tax purposes was approximately $103.8 million; cumulative gross unrealized depreciation for federal income tax purposes was $119.7 million. Cumulative net unrealized depreciation was $15.9 million, based on a tax cost of $1,796.1 million.

[4] Equity ownership may be held in shares or units of a company that is either wholly owned by the portfolio company or under common control by the same parent company to the portfolio company.

[5] Unless otherwise noted, all portfolio company headquarters are based in the United States.

[6] As of March 31, 2025, the cumulative gross unrealized appreciation for U.S. federal income tax purposes was approximately $117.4 million; cumulative gross unrealized depreciation for federal income tax purposes was $108.2 million. Cumulative net unrealized depreciation was $9.2 million, based on a tax cost of $1,776.1 million.

[7] Equity ownership may be held in shares or units of a company that is either wholly owned by the portfolio company or under common control by the same parent company to the portfolio company.

[8] Negative cost in this column represents the original issue discount of certain undrawn revolvers and delayed draw term loans.

[9] Unless otherwise noted, all portfolio company headquarters are based in the United States.

[10] All debt investments are income-producing, unless otherwise noted. Equity investments are non-income producing, unless otherwise noted. All amounts are stated in U.S. Dollars.

[11] Non-Control/Non-Affiliate investments are generally defined by the 1940 Act as investments that are neither control investments nor affiliate investments. Investments are classified as non-control/non-affiliate investments, unless otherwise noted. At March 31, 2025, the Company held $1,436.3 million of non-control/non-affiliate investments, which represented approximately 80.5% of the Company’s investment assets. The fair value of these investments as a percent of net assets is 162.6%.