CONCENTRATIONS OF CREDIT (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($)
Concentration Risk [Line Items]
Commitments to expend in excess of capital, secured basis, percentage	20.00%
Commitments to expend in excess of capital, secured basis	$ 41,298
Commitments to expend in excess of capital, unsecured basis, percentage	10.00%
Commitments to expend in excess of capital, unsecured basis	$ 20,649
Real estate mortgages \| Financing Receivable \| Loan Portfolio Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	83.00%

Commitments To Extend Credit In Excess Of Capital, Secured Basis

No definition available.

Name:	ssbk_CommitmentsToExtendCreditInExcessOfCapitalSecuredBasis
Namespace Prefix:	ssbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Commitments To Extend Credit In Excess Of Capital, Secured Basis, Percentage

+ References

No definition available.

+ Details

Name:	ssbk_CommitmentsToExtendCreditInExcessOfCapitalSecuredBasisPercentage
Namespace Prefix:	ssbk_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Commitments To Extend Credit In Excess Of Capital, Unsecured Basis

+ References

No definition available.

+ Details

Name:	ssbk_CommitmentsToExtendCreditInExcessOfCapitalUnsecuredBasis
Namespace Prefix:	ssbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Commitments To Extend Credit In Excess Of Capital, Unsecured Basis, Percentage

+ References

No definition available.

+ Details

Name:	ssbk_CommitmentsToExtendCreditInExcessOfCapitalUnsecuredBasisPercentage
Namespace Prefix:	ssbk_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=ssbk_RealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_FinanceReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=ssbk_LoanPortfolioConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: