Debt - Additional Information (Details) - USD ($)									3 Months Ended		6 Months Ended
		May 31, 2024	May 09, 2023	Mar. 09, 2023	Oct. 27, 2021	Feb. 17, 2021	Jul. 30, 2020	Mar. 28, 2016	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	May 05, 2021	Oct. 28, 2020
Debt Instrument [Line Items]
Weighted average interest rate											7.26%	6.82%
Weighted average debt outstanding									$ 879,399,000	$ 882,392,000	$ 869,295,000	$ 810,760,000
Aggregate Principal Amount Committed									1,181,600,000		1,181,600,000		$ 1,181,600,000
Deferred financing costs, net									7,903,000		7,903,000		7,138,000
Series 2020A Unsecured Notes
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount							$ 50,000,000
Debt instrument, offering date							Jul. 30, 2020
Debt instrument, interest rate							5.95%
Debt instrument, maturity date							Jul. 30, 2023
Series 2020A Unsecured Notes, Issued on July 30, 2020
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount							$ 25,000,000
Series 2020A Unsecured Notes, Issued on October 28, 2020
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount															$ 25,000,000
Series 2021A Unsecured Notes
Debt Instrument [Line Items]
Aggregate Principal Amount Committed	[1]								135,000,000		135,000,000		135,000,000
Deferred financing costs, net									467,000		$ 467,000		609,000
Debt instrument, aggregate principal amount						$ 135,000,000
Debt instrument, offering date						Feb. 17, 2021
Debt instrument, interest rate						4.00%
Debt instrument, maturity date						Feb. 17, 2026
Debt instrument, redemption, description											The Series 2021A Unsecured Notes will mature on February 17, 2026 and may be redeemed in whole or in part, at the Company’s option, at any time or from time to time at par plus a “make-whole” premium, if applicable
Series 2021A Unsecured Notes, Closed on February 17, 2021
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount						$ 50,000,000
Series 2021A Unsecured Notes, Closed on May 5, 2021
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount														$ 85,000,000
FCRX Unsecured Notes
Debt Instrument [Line Items]
Aggregate Principal Amount Committed	[2]								111,600,000		$ 111,600,000		111,600,000
Debt instrument, aggregate principal amount				$ 111,600,000
Percentage of redemption price of outstanding principal amount				100.00%
Debt instrument, interest rate				5.00%
Debt instrument, maturity date				May 25, 2026
Debt instrument, redemption, description											The FCRX Unsecured Notes mature on May 25, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option, at a redemption price of 100% of the outstanding principal amount thereof plus accrued and unpaid interest payments otherwise payable for the then-current quarterly interest period accrued to but not including the date fixed for redemption
Series 2023A Unsecured Notes
Debt Instrument [Line Items]
Aggregate Principal Amount Committed	[3]								50,000,000		$ 50,000,000		50,000,000
Deferred financing costs, net									156,000		$ 156,000		193,000
Debt instrument, aggregate principal amount			$ 50,000,000
Debt instrument, offering date			May 09, 2023
Debt instrument, interest rate			7.54%
Debt instrument, maturity date			Jul. 28, 2026
Debt instrument, redemption, description											The Series 2023A Unsecured Notes will mature on July 28, 2026 and may be redeemed in whole or in part, at the Company’s option, at any time or from time to time at par plus a “make-whole” premium, if applicable.
Series 2020A Unsecured Notes, Maturity On July 28, 2023
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount			$ 50,000,000
SPV Asset Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Committed								$ 500,000,000	500,000,000		$ 500,000,000		500,000,000
Line of credit facility, maturity date, description											The maturity date is the earlier of (a) the date the Borrower voluntarily reduces the commitments to zero, (b) May 31, 2029 and (c) the date upon which Wells Fargo declares the obligations due and payable after the occurrence of an Event of Default
Line of credit facility, interest rate description											plus a 2.45% margin with no floor
Unused facility fees								0.50%
Line of credit facility, covenant compliance											The SPV Asset Facility includes customary covenants, including certain limitations on the incurrence of additional indebtedness and liens, as well as usual and customary events of default for revolving credit facilities of this nature. The facility size is subject to availability under the borrowing base, which is based on the amount of CCAP SPV’s assets from time to time, and satisfaction of certain conditions, including certain concentration limits
Deferred financing costs, net									5,863,000		$ 5,863,000		4,614,000
Extended maturity date		May 31, 2029
Extended reinvestment period		May 31, 2027
SMBC Corporate Revolving Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Committed					$ 385,000,000				385,000,000		$ 385,000,000		385,000,000
Line of credit facility, interest rate description											adjusted SOFR plus 1.875% or 2.000%
Unused facility fees					0.375%
Deferred financing costs, net									$ 1,417,000		$ 1,417,000		$ 1,721,000
Line of credit facility, maturity date					Oct. 27, 2026
Minimum | SPV Asset Facility
Debt Instrument [Line Items]
Interest Rate, Floor		2.75%
Minimum | SMBC Corporate Revolving Facility | LIBOR
Debt Instrument [Line Items]
Interest Rate, Floor					1.875%
Maximum | SPV Asset Facility
Debt Instrument [Line Items]
Interest Rate, Floor		2.45%
Maximum | SMBC Corporate Revolving Facility | SOFR
Debt Instrument [Line Items]
Interest Rate, Floor					2.00%

[1] As of June 30, 2024 and December 31, 2023, the fair value of the Series 2021A Unsecured Notes was approximately $129,531 and $128,296, respectively.

[2] As of June 30, 2024 and December 31, 2023, the fair value of the FCRX Unsecured Notes was approximately $107,359 and $104,458.

[3] As of June 30, 2024 and December 31, 2023, the fair value of the Series 2023A Unsecured Notes was approximately $51,590 and $51,986.