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Organization - Additional Information (Details) - USD ($)		3 Months Ended
	Feb. 11, 2014	Mar. 31, 2025	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Dec. 31, 2024	Jun. 30, 2022	Aug. 30, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Issuance of common shares			0		0
Common stock, par value		$ 0.001				$ 0.001
Common stock, shares issued		14,414,033				14,406,244
Issuance of common shares		$ 0		$ 0
Common stock, shares outstanding		14,414,033		14,397,121		14,406,244
Repayment of debt percentage		100.00%
Qualifying assets percentage		70.00%
Amount of market capitalization		$ 250,000,000
Taxable subsidiaries		$ 0		$ 0		$ 0
CM Finance LLC
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Common stock, shares issued		6,000,000
Issuance of debt		$ 39,800,000
Stifel Venture Corp
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Common stock, shares issued							2,181,818
Issuance of common shares		$ 32,700,000
Number of common stock shares repurchased		2,181,818
Common stock, shares outstanding		13,666,666
Investcorp Credit Management
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Common stock, par value								$ 0.001
Common stock, shares issued								680,985
Common stock, shares outstanding								680,985
IPO | Investcorp Credit Management | Common Stock
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Issuance of common shares	7,666,666
Common stock, par value	$ 0.001
Shares offering, price per share	$ 15
Proceeds from initial public offering	$ 111,500,000

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