Related Party Agreements and Transactions - Additional Information (Details)	12 Months Ended			36 Months Ended
	Dec. 31, 2023 USD ($) Component shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) shares
Related Party Transaction [Line Items]
Gross assets	$ 1,079,153,000	$ 1,141,766,000		$ 1,141,766,000
Management fees	16,711,000	11,882,000	$ 8,989,000
Incentive fees	19,046,000	13,183,000	9,232,000
Incentive fees payable	12,500,000	8,808,000		$ 8,808,000
Administration agreement expenses	$ 2,125,000	$ 1,838,000	1,566,000
Issuance of common stock, value			$ 119,294,000
Common stock, shares outstanding | shares	40,509,269	40,509,269		40,509,269
Scenario, Pre-incentive fee net income less than 2.0%
Related Party Transaction [Line Items]
Incentive fees	$ 0
Advisory Agreement
Related Party Transaction [Line Items]
Percentage of base management fee	1.50%	1.60%	1.60%
Number of fees components | Component	2
Management fees	$ 16,700,000	$ 11,900,000	$ 9,000,000
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%
Incentive fee income	$ 0
Percentage of aggregate cumulative realized capital gains	20.00%
Capital gains fee	$ 0
Incentive fees	19,000,000	13,200,000	9,200,000
Capital gains incentive fee accrued	$ 0	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	$ 14,100,000	11,000,000	7,400,000
Incentive fees payable	3,300,000	3,800,000		3,800,000
Advisory Agreement | Deferred Payments
Related Party Transaction [Line Items]
Incentive fees	4,900,000	2,200,000	1,800,000
Incentive fees payable	$ 9,165,000	5,009,000		5,009,000
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	$ 2,100,000	1,800,000	1,600,000
Administration Agreement | Third-party service provider
Related Party Transaction [Line Items]
Administration agreement expenses	800,000	800,000	700,000
Administration Agreement | Overhead allocation expense
Related Party Transaction [Line Items]
Accrued expenses	200,000	200,000	300,000	200,000
Administration agreement expenses	1,300,000	1,000,000	900,000
Administration Agreement | Affiliated Entity | Third-party service provider
Related Party Transaction [Line Items]
Accrued expenses	$ 400,000	$ 400,000	$ 200,000	$ 400,000
Oaktree Capital Management, L.P
Related Party Transaction [Line Items]
Common stock, shares outstanding | shares	16,492,168
Percentage of common stock shares issued and outstanding	40.70%
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	15,588,549
Percentage of common stock shares issued and outstanding	38.50%
OCM Growth Holding, LLC
Related Party Transaction [Line Items]
Common stock, shares outstanding | shares	16,473,290
Oaktree Opportunities Fund Xb Holding, L.P.
Related Party Transaction [Line Items]
Common stock, shares outstanding | shares	18,878
Oaktree Opportunities Fund Xb Holding, L.P. | Secondary Transactions
Related Party Transaction [Line Items]
Issuance of common stock, Shares | shares				24,100