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Organization - Additional Information (Details)						3 Months Ended
	Aug. 23, 2021 $ / shares shares	Jun. 09, 2021 USD ($) $ / shares shares	Oct. 28, 2020 USD ($) $ / shares shares	Dec. 31, 2018	Nov. 08, 2018 USD ($)	Mar. 31, 2023 $ / shares shares	Dec. 31, 2022 $ / shares shares	Aug. 24, 2021 shares	Jul. 23, 2021 USD ($)	Jun. 24, 2021 USD ($)	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%
Common stock, par value						$ 0.01	$ 0.01
Common stock, issued | shares						9,927,289	9,916,856
Common stock, authorized | shares						20,000,000	20,000,000
Reverse Stock Split
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value	$ 0.01
Reverse stock split	0.10
Common stock, authorized | shares	100,000,000							20,000,000
HCAP Notes
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Aggregate principal amount | $		$ 28,750,000
Interest rate		6.125%
Debt instrument, due date		Sep. 15, 2022
Debt Instrument redemption, amount | $									$ 28,750,000	$ 28,750,000
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 | $					$ 37,900,000
GARS Acquisition
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Date of acquisition agreement			Jun. 24, 2020
Common stock, par value			$ 1.26
Share value in cash			$ 1.19
Common stock, issued | shares			1.917
Additional consideration funded by adviser			$ 0.31
Additional consideration funded by adviser | $			$ 5,000,000.0
GARS Acquisition | Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value			$ 0.01
Common stock, issued | shares			30,765,640
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 | $		$ 18,537,512.65
Common stock, par value		$ 2.43
Additional consideration funded by adviser | $		$ 2,150,000
Business acquisition, number of shares issued | shares		15,252,453
Number of electing shares converted to non-electing shares | shares		475,806
Shares received for each electing shares		$ 0.74
Cash received for each electing shares		7.43
Shares received for each non-electing shares		3.86
HCAP Acquisition | Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock, par value		$ 0.01
Common stock, issued | shares		15,252,453

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