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Organization - Additional Information (Details) $ / shares in Units, $ in Thousands								3 Months Ended		9 Months Ended
	Jul. 15, 2025 USD ($) $ / shares shares	Jul. 14, 2025 $ / shares	May 06, 2025 $ / shares	Jun. 09, 2021 USD ($) $ / shares shares	Oct. 28, 2020 $ / shares shares	Dec. 31, 2018	Nov. 08, 2018 USD ($)	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 18, 2019 $ / shares shares	Mar. 29, 2019	Mar. 28, 2019
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Company incorporated date										Aug. 08, 2006
Asset coverage requirement percentage														150.00%	200.00%
Incentive fees | $								$ 1,069	$ 1,230	$ 2,956	$ 3,838
Common stock, par value								$ 0.01		$ 0.01		$ 0.01
Common stock, issued | shares								13,959,765		13,959,765		9,960,785
Aggregate principal amount | $												$ 267,479
Common stock, authorized | shares								20,000,000		20,000,000		20,000,000
Asset Manager Subsidiaries
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Date of acquisition agreement							Nov. 08, 2018
Date of acquisition closing						Dec. 31, 2018
Cash purchase price | $							$ 37,900
OHAI Transaction
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value													$ 0.01
Share value in cash													$ 0.42
Common stock, issued | shares													0.3688
Additional consideration funded by adviser													$ 0.15
OHAI Transaction | Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value													$ 0.001
GARS Acquisition
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Date of acquisition agreement					Jun. 24, 2020
Share value in cash					$ 1.19
Common stock, issued | shares					1.917
Additional consideration funded by adviser					$ 0.31
GARS Acquisition | Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value					0.01
GARS Acquisition | GARS Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value					$ 0.001
HCAP Acquisition
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cash purchase price | $				$ 18,540
Additional consideration funded by adviser | $				$ 2,150
Business acquisition, number of shares issued | shares				15,252,453
HCAP Acquisition | Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value				$ 0.01
LRFC Acquisition
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cash purchase price | $	$ 0
Share value in cash	$ 12.55
LRFC Acquisition | Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value	$ 0.01
Common stock, issued | shares	3,984,078
Merger related shares issued per LRFC shares converted in to right to receive	1.5
LRFC Acquisition | O 2025 Q2 Dividends
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Date of record			May 06, 2025
Declared cash distribution of per share of common stock			$ 0.47
LRFC Acquisition | O 2025 Q3 Dividends
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Date of record		Jul. 14, 2025
Declared cash distribution of per share of common stock		$ 0.38

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