Debt Instrument, Collateral, Number Of Loans

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- Definition

Debt Instrument, Term, Extension Option

+ References

No definition available.

+ Details

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- Definition

Interest Payable And Line Of Credit Facility, Commitment Fee Payable

+ References

No definition available.

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- Definition

Investment Owned, Face Amount, Increase (Decrease)

+ References

No definition available.

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- Definition

Investment Owned, Percentage

+ References

No definition available.

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- Definition

Investment Owned, Purchase Price, Percent Of Aggregate Outstanding Balance, Minimum

+ References

No definition available.

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- Definition

Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of assets pledged to secure a debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Percentage of total assets less all liabilities and indebtedness not represented by senior security, to senior security representing indebtedness.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Investment Company Act of 1940
-Section 61
-Paragraph a
-Subparagraph (1)
-Publisher SEC

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- Definition

Nominal or face amount on the investment owned.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of increase (decrease) of the credit facility.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

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BORROWINGS - Narrative (Details)									6 Months Ended
BORROWINGS - Narrative (Details)	May 26, 2026 USD ($)	Dec. 01, 2025	Oct. 07, 2025 USD ($)	Mar. 27, 2025 USD ($)	Mar. 12, 2025 USD ($)	Oct. 18, 2024 USD ($)	Jul. 02, 2024 USD ($)	Aug. 30, 2018 USD ($)	Jun. 30, 2026 USD ($) loan	May 25, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025	Mar. 11, 2025 USD ($)	Nov. 20, 2023 USD ($)	Dec. 11, 2020 USD ($)	Dec. 30, 2019 USD ($)	Jun. 26, 2015 USD ($)
Line of Credit Facility [Line Items]
Asset coverage, end of period									182.29%		175.60%	190.84%
Total Principal Amount Outstanding									$ 1,312,137,000		$ 1,543,660,000
Interest and credit facility fees payable									19,597,000		19,092,000
Investment purchase price, percent of aggregate outstanding balance, minimum								5.00%
2015-1 Issuer Preferred Interests
Line of Credit Facility [Line Items]
Investment owned, percentage received																	100.00%
Investment owned, nominal value							$ 118,054,000	$ 104,525,000									$ 125,900,000
Nominal value increase (decrease)							13,500,000	$ (21,375,000)
Senior Notes
Line of Credit Facility [Line Items]
Total Principal Amount Outstanding									600,000,000		600,000,000
Interest and credit facility fees payable									$ 14,278,000		$ 12,847,000
Weighted average interest rate									6.43%		6.84%
Securitizations
Line of Credit Facility [Line Items]
Interest and credit facility fees payable									$ 4,561,000		$ 4,810,000
Weighted average interest rate									5.61%		5.84%
Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Total Principal Amount Outstanding									$ 332,137,000		$ 563,660,000
Credit Facility \| Line of Credit \| NYFRB rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate					0.50%
Credit Facility \| Line of Credit \| Adjusted SOFR rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate					1.00%
Credit Facility \| Line of Credit \| Benchmark rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate					1.875%
Credit Facility \| Line of Credit \| Alternate Base Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate					0.875%
2019 Notes \| Senior Notes
Line of Credit Facility [Line Items]
Face amount																$ 115,000,000.0
Stated interest rate																4.75%
2024 Notes \| Senior Notes
Line of Credit Facility [Line Items]
Face amount															$ 75,000,000.0
Stated interest rate															4.50%
2028 Senior Unsecured Notes [Member] \| Senior Notes
Line of Credit Facility [Line Items]
Face amount														$ 85,000,000.0
Stated interest rate														8.20%
Redemption price		100.00%
2030 Notes \| Senior Notes
Line of Credit Facility [Line Items]
Total Principal Amount Outstanding									300,000,000		300,000,000
Debt instrument, basis spread on variable rate						0.45%
Face amount						$ 300,000,000.0
Stated interest rate						6.75%
Redemption price						100.00%
2031 Notes \| Senior Notes
Line of Credit Facility [Line Items]
Total Principal Amount Outstanding									300,000,000		300,000,000
Debt instrument, basis spread on variable rate			0.35%
Face amount			$ 300,000,000.0
Stated interest rate			5.75%
Redemption price			100.00%
2015-1R Notes \| Securitizations
Line of Credit Facility [Line Items]
Face amount																	$ 273,000,000
2015-1N Debt \| Securitizations
Line of Credit Facility [Line Items]
Total Principal Amount Outstanding									$ 380,000,000		380,000,000
Face amount							410,000,000
Collateral, number of loans \| loan									67
Collateral amount, debt instrument									$ 483,247,000
Collateral amount, cash									$ 12,050,000
2015-1N Debt, Class C-R Notes \| Securitizations
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate									3.75%
Face amount							$ 30,000,000		$ 30,000,000
Securitizations \| Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity					$ 825,000				875,457,000	$ 960,000,000	960,000,000
Line of credit facility, decrease	$ 135,000,000
Total Principal Amount Outstanding									50,457,000
Maximum borrowing capacity, accordion feature option					$ 1,402,500,000								$ 1,185,000,000
Unused capacity commitment fee, percentage					0.375%
Interest and credit facility fees payable									$ 758,000		$ 1,435,000
Weighted average interest rate									4.89%		5.28%
Securitizations \| CSL III SPV Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$ 250,000,000
Unused capacity commitment fee, percentage				0.30%
Debt term, extension option				1 year
Securitizations \| CSL III SPV Credit Facility \| Line of Credit \| Federal Funds Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				0.50%
Securitizations \| CSL III SPV Credit Facility \| Line of Credit \| SOFR
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				2.85%
Swingline loan \| Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity					$ 75,000,000								50,000,000
Letter of credit \| Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity					$ 30,000,000								$ 20,000,000