Related Party Agreements and Transactions - Additional Information (Details)	3 Months Ended
	Mar. 31, 2024 USD ($) Component shares	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) shares
Related Party Transaction [Line Items]
Gross assets	$ 1,030,938,000		$ 1,079,153,000
Management fees	3,952,000	$ 3,959,000
Incentive fees	4,668,000	4,563,000
Incentive fees payable	13,836,000		$ 12,500,000
Administration agreement expenses	$ 564,000	$ 583,000
Common stock, shares outstanding | shares	39,622,162		40,509,269
Unfunded loan commitments	$ 235,820,000		$ 201,520,000
Scenario, Pre-incentive fee net income less than 2.0%
Related Party Transaction [Line Items]
Incentive fees	0
Joint Venture
Related Party Transaction [Line Items]
Unfunded loan commitments	35,000,000		0
Receivables	$ 200,000		0
Advisory Agreement
Related Party Transaction [Line Items]
Percentage of base management fee	1.50%	1.50%
Number of fees components | Component	2
Management fees	$ 4,000,000	$ 4,000,000
Percentage of incentive fee quarterly catch-up hurdle rate	2.667%
Percentage of incentive fee annual catch-up hurdle rate	10.668%
Percentage of pre-incentive fee net investment income	20.00%
Percentage of aggregate cumulative realized capital gains	20.00%
Capital gains fee	$ 0
Incentive fees	4,700,000	4,600,000
Capital gains incentive fee accrued	$ 0		0
Percentage of minimum pre-incentive fee net investment income accrued	20.00%
Percentage of minimum cumulative net investments realized capital gain loss	8.00%
Advisory Agreement | Minimum
Related Party Transaction [Line Items]
Percentage of non-affiliate investments	2.00%
Percentage of adjusted pre-incentive fee net investment income	10.00%
Advisory Agreement | Maximum
Related Party Transaction [Line Items]
Percentage of non-affiliate investments	2.00%
Percentage of adjusted pre-incentive fee net investment income	10.00%
Advisory Agreement | Scenario, more than $500M but less than $1B
Related Party Transaction [Line Items]
Percentage of base management fee	1.60%
Advisory Agreement | Scenario, more than $500M but less than $1B | Minimum
Related Party Transaction [Line Items]
Gross assets	$ 500,000,000
Advisory Agreement | Scenario, more than $500M but less than $1B | Maximum
Related Party Transaction [Line Items]
Gross assets	$ 1,000,000,000
Advisory Agreement | Scenario, up to $500M
Related Party Transaction [Line Items]
Percentage of base management fee	1.75%
Advisory Agreement | Scenario, up to $500M | Maximum
Related Party Transaction [Line Items]
Gross assets	$ 500,000,000
Advisory Agreement | Scenario, more than $1B
Related Party Transaction [Line Items]
Percentage of base management fee	1.50%
Advisory Agreement | Scenario, more than $1B | Minimum
Related Party Transaction [Line Items]
Gross assets	$ 1,000,000,000
Advisory Agreement | Scenario, Minimum
Related Party Transaction [Line Items]
Percentage of incentive fee quarterly hurdle rate	2.00%
Percentage of incentive fee annual hurdle rate	8.00%
Advisory Agreement | Scenario, Pre-incentive fee net income less than 2.0%
Related Party Transaction [Line Items]
Percentage of incentive fee quarterly hurdle rate	2.00%
Advisory Agreement | Scenario, 80% of the portion of pre-incentive fee net income that is between 2.0% and 2.667%
Related Party Transaction [Line Items]
Percentage of incentive fee quarterly catch-up hurdle rate	2.667%
Percentage of pre-incentive fee net investment income	80.00%
Advisory Agreement | Scenario, 80% of the portion of pre-incentive fee net income that is between 2.0% and 2.667% | Maximum
Related Party Transaction [Line Items]
Percentage of incentive fee quarterly catch-up hurdle rate	2.667%
Percentage of incentive fee annual catch-up hurdle rate	10.668%
Advisory Agreement | Scenario, 20% of portion of pre-incentive fee net income that is over 2.667%
Related Party Transaction [Line Items]
Percentage of pre-incentive fee net investment income	20.00%
Advisory Agreement | Scenario, 20% of portion of pre-incentive fee net income that is over 2.667% | Minimum
Related Party Transaction [Line Items]
Percentage of incentive fee quarterly catch-up hurdle rate	2.667%
Percentage of incentive fee annual catch-up hurdle rate	10.668%
Advisory Agreement | Payable in Cash
Related Party Transaction [Line Items]
Incentive fees	$ 3,600,000	3,500,000
Incentive fees payable	3,600,000		3,300,000
Advisory Agreement | Deferred Payments
Related Party Transaction [Line Items]
Incentive fees	1,100,000	1,100,000
Incentive fees payable	$ 10,216,000	10,200,000	9,165,000
Advisory Agreement | Quarterly Base Rate | Scenario, more than $500M but less than $1B
Related Party Transaction [Line Items]
Percentage of base management fee	0.40%
Advisory Agreement | Quarterly Base Rate | Scenario, up to $500M
Related Party Transaction [Line Items]
Percentage of base management fee	0.4375%
Advisory Agreement | Quarterly Base Rate | Scenario, more than $1B
Related Party Transaction [Line Items]
Percentage of base management fee	0.375%
Administration Agreement
Related Party Transaction [Line Items]
Administration agreement expenses	$ 600,000	600,000
Administration Agreement | Third-party service provider
Related Party Transaction [Line Items]
Administration agreement expenses	200,000	300,000
Administration Agreement | Overhead allocation expense
Related Party Transaction [Line Items]
Accrued expenses	300,000	400,000
Administration agreement expenses	400,000	300,000
Administration Agreement | Affiliated Entity | Third-party service provider
Related Party Transaction [Line Items]
Accrued expenses	$ 500,000	$ 700,000
Oaktree Capital Management, L.P
Related Party Transaction [Line Items]
Common stock, shares outstanding | shares	15,492,168
Percentage of common stock shares issued and outstanding	39.10%
Percentage of common stock initial capital commitment	33.00%
Common stock initial capital commitment	$ 125,000,000
Oaktree Capital Management, L.P | Initial and Second Private Offering
Related Party Transaction [Line Items]
Issuance of common stock, Shares | shares	14,571,334
Issuance of common stock, value	$ 219,300,000
Oaktree Capital Management, L.P | Shares Subject to Proxy Voting
Related Party Transaction [Line Items]
Common stock, shares outstanding | shares	14,607,426
Percentage of common stock shares issued and outstanding	36.90%
OCM Growth Holding, LLC
Related Party Transaction [Line Items]
Common stock, shares outstanding | shares	15,492,168
Loan and Security Agreement | Joint Venture
Related Party Transaction [Line Items]
Unfunded loan commitments			$ 40,000,000