Name:	ssic_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAccretionOfDiscountAndFeesNet
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Amount of gain (loss) recognized in income from assets measured at fair value on recurring basis using unobservable input (level 3).

No definition available.

Name:	ssic_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetRealizedGainLossOnInvestments
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Amount of change in investment from paid-in-kind interest of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	ssic_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterestInvestment
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of proceeds from sale of investments and principal repayments of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	ssic_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetProceedsFromSaleOfInvestmentsAndPrincipalRepayments
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of net change in unrealized appreciation or depreciation of assets measured at fair value on recurring basis using unobservable input (level 3).

No definition available.

Name:	ssic_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetChangeInUnrealizedAppreciationOrDepreciationFromInvestments
Namespace Prefix:	ssic_
Data Type:	xbrli:monetaryItemType
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Indicates line item in statement in which net income is reported that includes unrealized gain (loss) from asset measured at fair value using unobservable input (level 3) and still held.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

Name:	us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
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Data Type:	xbrli:stringItemType
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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2