XML 78 R62.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Note 3 - Loans - Loans Modified During Period (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Modified Amortized Cost |  | $ 444
Percentage of total loans | 0.37% |
Number of Contracts |  | 3
Pre- Modification Outstanding Recorded Investment |  | $ 444
Extended Maturity [Member] |  |
Modified Amortized Cost | $ 42,315 |
Payment Deferral [Member] |  |
Modified Amortized Cost | 303 |
Extended Maturity and Payment Deferral [Member] |  |
Modified Amortized Cost | $ 42,618 |
Commercial Real Estate Portfolio Segment [Member] |  |
Modified Amortized Cost |  | $ 444
Percentage of total loans | 0.24% |
Total payment deferral | $ 0 |
Number of Contracts |  | 3
Pre- Modification Outstanding Recorded Investment |  | $ 444
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity [Member] |  |
Modified Amortized Cost | 28,363 |
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member] |  |
Modified Amortized Cost | 0 |
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity and Payment Deferral [Member] |  |
Modified Amortized Cost | $ 28,363 |
Commercial Real Estate Portfolio Segment [Member] | Minimum [Member] |  |
Term extension (Year) | 1 year |
Commercial Real Estate Portfolio Segment [Member] | Maximum [Member] |  |
Term extension (Year) | 65 years |
Real Estate Portfolio Segment[Member] |  |
Modified Amortized Cost |  | $ 0
Number of Contracts |  | 0
Pre- Modification Outstanding Recorded Investment |  | $ 0
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |
Modified Amortized Cost |  | $ 0
Percentage of total loans | 0.03% |
Total payment deferral | $ 49 |
Number of Contracts |  | 0
Pre- Modification Outstanding Recorded Investment |  | $ 0
Real Estate Portfolio Segment[Member] | Other Mortgages [Member] |  |
Modified Amortized Cost |  | $ 0
Percentage of total loans | 0.10% |
Total payment deferral | $ 59 |
Number of Contracts |  | 0
Pre- Modification Outstanding Recorded Investment |  | $ 0
Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |
Modified Amortized Cost |  | $ 0
Number of Contracts |  | 0
Pre- Modification Outstanding Recorded Investment |  | $ 0
Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |
Modified Amortized Cost |  | $ 0
Number of Contracts |  | 0
Pre- Modification Outstanding Recorded Investment |  | $ 0
Real Estate Portfolio Segment[Member] | Extended Maturity [Member] | Owner Occupied Commercial [Member] |  |
Modified Amortized Cost | 3,021 |
Real Estate Portfolio Segment[Member] | Extended Maturity [Member] | Other Mortgages [Member] |  |
Modified Amortized Cost | 10,932 |
Real Estate Portfolio Segment[Member] | Payment Deferral [Member] | Owner Occupied Commercial [Member] |  |
Modified Amortized Cost | 0 |
Real Estate Portfolio Segment[Member] | Payment Deferral [Member] | Other Mortgages [Member] |  |
Modified Amortized Cost | 303 |
Real Estate Portfolio Segment[Member] | Extended Maturity and Payment Deferral [Member] | Owner Occupied Commercial [Member] |  |
Modified Amortized Cost | 3,021 |
Real Estate Portfolio Segment[Member] | Extended Maturity and Payment Deferral [Member] | Other Mortgages [Member] |  |
Modified Amortized Cost | $ 11,234 |
Real Estate Portfolio Segment[Member] | Minimum [Member] | Owner Occupied Commercial [Member] |  |
Term extension (Year) | 3 years |
Real Estate Portfolio Segment[Member] | Minimum [Member] | Other Mortgages [Member] |  |
Term extension (Year) | 3 years |
Real Estate Portfolio Segment[Member] | Maximum [Member] | Owner Occupied Commercial [Member] |  |
Term extension (Year) | 60 years |
Real Estate Portfolio Segment[Member] | Maximum [Member] | Other Mortgages [Member] |  |
Term extension (Year) | 36 years |
Consumer Portfolio Segment [Member] |  |
Modified Amortized Cost |  | $ 0
Number of Contracts |  | 0
Pre- Modification Outstanding Recorded Investment |  | $ 0

X
- Definition Represents the value of deferred payments for modification of financing receivables. + References No definition available. + Details
Name: | sfbs_FinancingReceivableModifiedDeferredPayments
Namespace Prefix: | sfbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of financing receivables that have been modified. + References No definition available. + Details
Name: | sfbs_FinancingReceivableModifiedNumberOfContracts
Namespace Prefix: | sfbs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the term extension for modified financing receivables. + References No definition available. + Details
Name: | sfbs_FinancingReceivableModifiedTermExtension
Namespace Prefix: | sfbs_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References No definition available. + Details
Name: | sfbs_FinancingReceivableTroubledDebtRestructuringPremodification1
Namespace Prefix: | sfbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A + Details
Name: | us-gaap_FinancingReceivableModificationToTotalFinancingReceivablesPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-33 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=sfbs_ExtendedMaturityAndPaymentDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=sfbs_RealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfbs_OwnerOccupiedCommercialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfbs_OtherMortgagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfbs_OneToFourFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |