XML 78 R60.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Loans and Allowance for Loan Losses - Aging Analysis (Details) $ in Thousands | Dec. 31, 2023 USD ($)
--- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | $ 249,529
Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 233,704
Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 372
Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 15,453
Commercial & Industrial |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 211,733
Commercial & Industrial | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 199,702
Commercial & Industrial | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial & Industrial | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial & Industrial | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 12,031
Commercial & Industrial | Commercial, financial, and agricultural |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 135,140
Commercial & Industrial | Commercial, financial, and agricultural | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 123,843
Commercial & Industrial | Commercial, financial, and agricultural | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial & Industrial | Commercial, financial, and agricultural | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial & Industrial | Commercial, financial, and agricultural | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 11,297
Commercial & Industrial | Owner-occupied |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 76,593
Commercial & Industrial | Owner-occupied | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 75,859
Commercial & Industrial | Owner-occupied | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial & Industrial | Owner-occupied | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial & Industrial | Owner-occupied | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 734
Commercial Real Estate |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 33,052
Commercial Real Estate | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 31,538
Commercial Real Estate | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 1,514
Commercial Real Estate | Investment properties |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 909
Commercial Real Estate | Investment properties | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 604
Commercial Real Estate | Investment properties | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | Investment properties | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | Investment properties | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 305
Commercial Real Estate | 1-4 family properties |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 2,383
Commercial Real Estate | 1-4 family properties | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 1,174
Commercial Real Estate | 1-4 family properties | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | 1-4 family properties | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | 1-4 family properties | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 1,209
Commercial Real Estate | Land and development |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 29,760
Commercial Real Estate | Land and development | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 29,760
Commercial Real Estate | Land and development | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | Land and development | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Commercial Real Estate | Land and development | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 4,744
Consumer | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 2,464
Consumer | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 372
Consumer | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 1,908
Consumer | Consumer mortgages |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 2,575
Consumer | Consumer mortgages | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 1,423
Consumer | Consumer mortgages | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Consumer mortgages | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Consumer mortgages | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 1,152
Consumer | Home equity |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 623
Consumer | Home equity | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 623
Consumer | Home equity | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Home equity | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Home equity | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Credit cards |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Credit cards | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Credit cards | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Credit cards | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Credit cards | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Other consumer loans |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 1,546
Consumer | Other consumer loans | Current |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 418
Consumer | Other consumer loans | Accruing 30-89 Days Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 372
Consumer | Other consumer loans | Accruing 90 Days or Greater Past Due |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | 0
Consumer | Other consumer loans | Non-accrual |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized cost basis of loans, aging analysis | $ 756

X
- Definition Amortized cost excluding accrued interest, of financing receivable 12 months after modification 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)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPast12Months
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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 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/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 3: 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 4: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-34 + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=syn_FinancialAsset30To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=syn_FinancialAssetNonaccrualMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

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

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

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