XML 52 R40.htm IDEA: XBRL DOCUMENT
v3.25.3

Note 5 - Loans - Loans by Performance Status (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Total loans | $ 13,311,967 | $ 12,605,836
Commercial Real Estate Portfolio Segment [Member] |  |
Total loans | 2,945,784 | 2,869,894
Real Estate Portfolio Segment[Member] |  |
Total loans | 8,754,061 | 8,173,009
Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |
Total loans | 1,532,285 | 1,489,306
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |
Total loans | 2,680,055 | 2,547,143
Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |
Total loans | 1,625,296 | 1,444,623
Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member] |  |
Total loans | 4,448,710 | 4,181,243
Consumer Portfolio Segment [Member] |  |
Total loans | 79,837 | 73,627
Performing Financial Instruments [Member] |  |
Total loans | 13,144,340 | 12,563,370
Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Total loans | 2,911,262 | 2,844,164
Performing Financial Instruments [Member] | Real Estate Portfolio Segment[Member] |  |
Total loans | 8,658,996 | 8,157,715
Performing Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |
Total loans | 1,495,401 | 1,488,645
Performing Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |
Total loans | 2,667,082 | 2,538,399
Performing Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |
Total loans | 1,618,226 | 1,439,332
Performing Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member] |  |
Total loans | 4,373,688 | 4,179,984
Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member] |  |
Total loans | 78,681 | 72,846
Nonperforming Financial Instruments [Member] |  |
Total loans | 167,627 | 42,466
Nonperforming Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Total loans | 34,522 | 25,730
Nonperforming Financial Instruments [Member] | Real Estate Portfolio Segment[Member] |  |
Total loans | 95,065 | 15,294
Nonperforming Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |
Total loans | 36,884 | 661
Nonperforming Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |
Total loans | 12,973 | 8,744
Nonperforming Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |
Total loans | 7,070 | 5,291
Nonperforming Financial Instruments [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member] |  |
Total loans | 75,022 | 1,259
Nonperforming Financial Instruments [Member] | Consumer Portfolio Segment [Member] |  |
Total loans | $ 1,156 | $ 781

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfbs_NonownerOccupiedCommercialMember
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: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |