Agreement [Line item]

No definition available.

Name:	ck0001418076_AgreementLineItems
Namespace Prefix:	ck0001418076_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Cumulative Net Realized Gain And Unrealized Capital Appreciation

+ References

No definition available.

+ Details

Name:	ck0001418076_PercentageOfCumulativeNetRealizedGainAndUnrealizedCapitalAppreciation
Namespace Prefix:	ck0001418076_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Cumulative Realized Capital Gain Loss

+ References

No definition available.

+ Details

Name:	ck0001418076_PercentageOfCumulativeRealizedCapitalGainLoss
Namespace Prefix:	ck0001418076_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of pre-incentive fee net investment income.

+ References

No definition available.

+ Details

Name:	ck0001418076_PercentageOfPreIncentiveFeeNetInvestmentIncome
Namespace Prefix:	ck0001418076_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of total net assets.

+ References

No definition available.

+ Details

Name:	ck0001418076_PercentageOfTotalNetAssets
Namespace Prefix:	ck0001418076_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Performance based incentive fees waiver.

+ References

No definition available.

+ Details

Name:	ck0001418076_PerformanceBasedIncentiveFeesWaiver
Namespace Prefix:	ck0001418076_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Pre-incentive fee net investment income annual hurdle rate.

+ References

No definition available.

+ Details

Name:	ck0001418076_PreIncentiveFeeNetInvestmentIncomeAnnualHurdleRate
Namespace Prefix:	ck0001418076_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Pre-incentive fee net investment income Quarter hurdle rate.

+ References

No definition available.

+ Details

Name:	ck0001418076_PreIncentiveFeeNetInvestmentIncomeQuarterHurdleRate
Namespace Prefix:	ck0001418076_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense for administrative fee from service provided, including, but not limited to, salary, rent, or overhead cost.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 850
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-3

+ Details

Name:	us-gaap_AdministrativeFeesExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expense for incentive fee based on performance under arrangement to manage operations, including, but not limited to, investment.

+ References

+ Details

Name:	us-gaap_IncentiveFeeExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Base rate for management and service fees under arrangement to manage operations, including, but not limited to, investment.

+ References

+ Details

Name:	us-gaap_ManagementAndServiceFeesBaseRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Rate based on performance for management and service fees under arrangement to manage operations, including, but not limited to, investment.

+ References

+ Details

Name:	us-gaap_ManagementAndServiceFeesIncentiveRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense for investment management fee, including, but not limited to, expense in connection with research, selection, supervision, and custody of investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-10

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 850
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

+ Details

Name:	us-gaap_ManagementFeeExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ck0001418076_AgreementAxis=ck0001418076_AdvisoryAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Agreements - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	May 04, 2026	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Agreement [Line Items]
Percentage of incentive fee				17.50%
Percentage of cumulative realized capital gain loss				17.50%
Percentage of cumulative net realized gain and unrealized capital appreciation				17.50%
Management fees		$ 7,847	$ 7,760	$ 15,631	$ 15,273
Administrative fees expense		1,599	1,503	3,045	2,864
Performance Based Incentive Fees Waiver		16	20	$ 30	22
Minimum [Member]
Agreement [Line Items]
Percentage of pre-incentive fee net investment income	17.50%
Maximum [Member]
Agreement [Line Items]
Percentage of pre-incentive fee net investment income	20.00%
Advisory Agreement [Member]
Agreement [Line Items]
Pre-incentive fee net investment income Quarter hurdle rate				1.75%
Pre-incentive fee net investment income Annual hurdle rate				7.00%
Percentage of incentive fee				20.00%
Percentage of cumulative realized capital gain loss				20.00%
Percentage of cumulative net realized gain and unrealized capital appreciation				20.00%
Management fees		7,847	7,760	$ 15,631	15,273
Performance-based incentive fees		3,764	5,397	8,223	10,923
Administrative fees expense		$ 1,599	$ 1,503	$ 3,045	$ 2,864
Advisory Agreement [Member] \| Minimum [Member]
Agreement [Line Items]
Annual management fee percentage				1.00%
Percentage of total net assets				200.00%
Percentage of incentive fee				100.00%
Advisory Agreement [Member] \| Maximum [Member]
Agreement [Line Items]
Annual management fee percentage				1.50%
Percentage of total net assets				200.00%