XML 109 R94.htm IDEA: XBRL DOCUMENT
v3.22.4

Commitments and Contingencies - Small Business Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Loss Contingencies [Line Items] |  |
Carrying amount included in other assets | $ 488,944 | $ 426,137
Amount of future funding commitments | 283,212 | 250,733
Permanent and short-term construction loans and letter of credit commitments | 177,998 | 204,391
Funded portion of permanent and short-term loans and letters of credit | 234,166 | 104,315
Letters of credit |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 220,622 | 183,463
Amounts participated | 25,700 | 26,100
Commitments to fund commercial and industrial loans |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 9,970,733 | 9,595,793
Commitments to fund commercial real estate, construction, and land development loans |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 3,629,531 | 3,593,171
Commitments under home equity lines of credit |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 2,156,641 | 1,805,869
Unused credit card lines |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 461,443 | 473,582
Other loan commitments |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 742,976 | 604,353
Guarantee Obligations |  |
Loss Contingencies [Line Items] |  |
Total letters of credit and unfunded lending commitments | 17,181,946 | 16,256,231
Permanent and Short-term Construction Loans and Letter of Credit Commitments |  |
Loss Contingencies [Line Items] |  |
Amounts participated | 4,700 | 6,000
Funded Portion of Permanent and Short-term Loans and Letters of Credit |  |
Loss Contingencies [Line Items] |  |
Amounts participated | $ 6,900 | $ 3,000

X
- Definition Amounts Participated + References No definition available. + Details
Name: | syn_AmountsParticipated
Namespace Prefix: | syn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax Credits, CRA Partnerships, And Other Investments, Amount Of Future Funding Commitments + References No definition available. + Details
Name: | syn_TaxCreditsCRAPartnershipsAndOtherInvestmentsAmountOfFutureFundingCommitments
Namespace Prefix: | syn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax Credits, CRA Partnerships, And Other Investments, Carrying Amount Included In Other Assets + References No definition available. + Details
Name: | syn_TaxCreditsCRAPartnershipsAndOtherInvestmentsCarryingAmountIncludedInOtherAssets
Namespace Prefix: | syn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax Credits, CRA Partnerships, And Other Investments, Funded Portion Of Permanent And Short-Term Loans And Letters Of Credit + References No definition available. + Details
Name: | syn_TaxCreditsCRAPartnershipsAndOtherInvestmentsFundedPortionOfPermanentAndShortTermLoansAndLettersOfCredit
Namespace Prefix: | syn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax Credits, CRA Partnerships, And Other Investments, Permanent And Short-Term Construction Loans And Letter Of Credit Commitments + References No definition available. + Details
Name: | syn_TaxCreditsCRAPartnershipsAndOtherInvestmentsPermanentAndShortTermConstructionLoansAndLetterOfCreditCommitments
Namespace Prefix: | syn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12021-110248 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_StandbyAndCommercialLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_CommitmentsToFundCommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_CommitmentsToFundCommercialRealEstateConstructionAndLandDevelopmentLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_CommitmentsUnderHomeEquityLinesOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_UnusedCreditCardLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_OtherLoanCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_GuaranteeObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_PermanentAndShortTermConstructionLoansAndLetterOfCreditCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=syn_FundedPortionOfPermanentAndShortTermLoansAndLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |