Debt - Additional Information (Details) - USD ($)								12 Months Ended
		Oct. 27, 2021	Feb. 17, 2021	Jul. 30, 2020	Jan. 30, 2020	Aug. 20, 2019	Mar. 28, 2016	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	May 05, 2021	Mar. 31, 2021	Oct. 28, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Weighted average interest rate								4.73%	3.72%	3.68%
Weighted average debt outstanding								$ 673,503,000	$ 530,675,000	$ 421,066,000
Aggregate Principal Amount Committed								885,000,000	835,000,000
Deferred financing costs, net								5,380,000	6,897,000
2023 Unsecured Notes
Debt Instrument [Line Items]
Aggregate Principal Amount Committed								50,000,000	50,000,000
Deferred financing costs, net								$ 157,000	429,000
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, any time on or after January 30, 2023 at par plus accrued interest or any time prior to January 30, 2023 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								$ 895,000	1,181,000
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, 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
InterNotes
Debt Instrument [Line Items]
Debt Instrument, Repurchase Amount												$ 16,418,000
SPV Asset Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Committed							$ 350,000,000	$ 350,000,000	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) June 22, 2026 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								LIBOR plus a margin with no LIBOR 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								$ 2,110,000	2,718,000
SMBC Corporate Revolving Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Committed		$ 350,000,000						$ 350,000,000	300,000,000
Line of credit facility, interest rate description								adjusted SOFR plus 1.875% or 2.000%
Unused facility fees		0.375%
Deferred financing costs, net								$ 2,217,000	$ 2,569,000
Line of credit facility, maturity date		Oct. 27, 2026
Ally Corporate Revolving Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Committed						$ 200,000,000
Line of credit facility, interest rate description								LIBOR plus a 2.35% margin with no LIBOR floor
Line of credit facility, maturity date						Oct. 27, 2021
Debt instrument, aggregate principal amount										$ 149,904,000				$ 104,754,000
Ally Corporate Revolving Facility | LIBOR
Debt Instrument [Line Items]
Variable interest rate						2.35%
Ally Corporate Revolving Facility | Floor
Debt Instrument [Line Items]
Line of credit facility, interest rate						0.00%
Minimum | InterNotes
Debt Instrument [Line Items]
Debt instrument, interest rate					6.25%
Debt instrument, maturity date					Feb. 15, 2021
Minimum | SPV Asset Facility
Debt Instrument [Line Items]
Line of credit facility, interest rate							1.65%
Minimum | SMBC Corporate Revolving Facility | LIBOR
Debt Instrument [Line Items]
Variable interest rate		1.875%
Maximum | InterNotes
Debt Instrument [Line Items]
Debt instrument, interest rate					6.75%
Debt instrument, maturity date					Apr. 15, 2022
Maximum | SPV Asset Facility
Debt Instrument [Line Items]
Line of credit facility, interest rate							2.10%
Maximum | SMBC Corporate Revolving Facility | SOFR
Debt Instrument [Line Items]
Variable interest rate		2.00%

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