Debt - Additional Information (Details) - USD ($)							3 Months Ended		12 Months Ended
		Mar. 09, 2023	Oct. 27, 2021	Feb. 17, 2021	Jul. 30, 2020	Mar. 28, 2016	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	May 05, 2021	Oct. 28, 2020
Debt Instrument [Line Items]
Weighted average interest rate							6.73%	3.43%
Weighted average debt outstanding							$ 735,181,000	$ 638,602,000	$ 735,181,000
Aggregate Principal Amount Committed							1,181,600,000		885,000,000
Deferred financing costs, net							8,540,000		5,380,000
2023 Unsecured Notes
Debt Instrument [Line Items]
Aggregate Principal Amount Committed							50,000,000		50,000,000
Deferred financing costs, net							$ 90,000		157,000
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
Debt instrument, redemption, description							The 2023 Unsecured Notes will mature on July 30, 2023 and may be redeemed in whole or in part, at the Company’s option, at par plus a “make-whole” premium and accrued interest
2023 Unsecured Notes, Issued on July 30, 2020
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount					$ 25,000,000
2023 Unsecured Notes, Issued on October 28, 2020
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount											$ 25,000,000
2026 Unsecured Notes
Debt Instrument [Line Items]
Aggregate Principal Amount Committed	[1]						$ 135,000,000		135,000,000
Deferred financing costs, net							$ 825,000		895,000
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 2026 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
2026 Unsecured Notes - FCRX
Debt Instrument [Line Items]
Aggregate Principal Amount Committed	[2]						$ 111,600,000
Debt instrument, aggregate principal amount		$ 111,600,000
Debt instrument, interest rate		5.00%
Debt instrument, maturity date		May 25, 2026
Debt instrument, redemption, description							The 2026 Unsecured Notes - FCRX 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 on or after May 25, 2023
2026 Unsecured Notes, Closed on February 17, 2021
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount				$ 50,000,000
2026 Unsecured Notes, Closed on May 5, 2021
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount										$ 85,000,000
SPV Asset Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Committed						$ 500,000,000	$ 500,000,000		350,000,000
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) March 7, 2028 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 2.75% 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							$ 5,444,000		2,110,000
SMBC Corporate Revolving Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Committed			$ 385,000,000				$ 385,000,000		350,000,000
Line of credit facility, interest rate description							adjusted SOFR plus 1.875% or 2.000%
Unused facility fees			0.375%
Deferred financing costs, net							$ 2,181,000		$ 2,217,000
Line of credit facility, maturity date			Oct. 27, 2026
Minimum | SMBC Corporate Revolving Facility | LIBOR
Debt Instrument [Line Items]
Interest Rate, Floor			1.875%
Maximum | SMBC Corporate Revolving Facility | SOFR
Debt Instrument [Line Items]
Interest Rate, Floor			2.00%

[1] As of March 31, 2023 and December 31, 2022, the fair value of the 2026 Unsecured Notes was approximately $123,667 and $123,223, respectively.

[2] As of March 31, 2023, the fair value of the 2026 Unsecured Notes - FCRX was approximately $102,538.