XML 66 R54.htm IDEA: XBRL DOCUMENT
v3.24.3

Loans and Leases and Allowance for Credit Losses - Loan Modifications to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total Nonaccrual Loans | $ 9,319 |  | $ 9,319 |  | $ 7,931
Total loans, post ASU 2019-04 | 3,717,478 |  | 3,717,478 |  | 3,444,462
90 Days or More Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 4,500 |  | 4,500 |  | 5,437
Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total | 110 | $ 1,790 | 336 | $ 2,447 |
Total Nonaccrual Loans | 743 |  | 743 |  |
Total loans, post ASU 2019-04 | 4,112 |  | 4,112 |  |
Loan modifications made to borrowers experiencing financial difficulty | Current [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 3,314 |  | 3,314 |  |
Loan modifications made to borrowers experiencing financial difficulty | 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 55 |  | 55 |  |
Payment Delay | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  |  |  | 466 |
Term Extension | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total | 110 | $ 1,790 | 336 | 1,828 |
Payment Delay and Term Extension | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  |  |  | $ 153 |
Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Weighted-Average (in months) |  | 12 months |  | 23 months |
Weighted-Average Total Payment Delay |  |  |  | $ 23 |
Total Nonaccrual Loans | 1,416 |  | 1,416 |  | 2,044
Total loans, post ASU 2019-04 | 1,899,785 |  | 1,899,785 |  | 1,739,205
Commercial Real Estate [Member] | 90 Days or More Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 802 |  | 802 |  | 1,660
Commercial Real Estate [Member] | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  | $ 528 | 226 | 969 |
Total Nonaccrual Loans | 398 |  | 398 |  |
Total loans, post ASU 2019-04 | 1,090 |  | 1,090 |  |
Commercial Real Estate [Member] | Loan modifications made to borrowers experiencing financial difficulty | Current [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 637 |  | 637 |  |
Commercial Real Estate [Member] | Loan modifications made to borrowers experiencing financial difficulty | 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 55 |  | $ 55 |  |
Commercial Real Estate [Member] | Payment Delay | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  |  |  | 403 |
Commercial Real Estate [Member] | Term Extension |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Weighted-Average (in months) |  |  | 64 months |  |
Commercial Real Estate [Member] | Term Extension | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  | $ 528 | $ 226 | $ 566 |
Consumer Real Estate [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Weighted-Average (in months) |  | 20 months |  | 15 months |
Total Nonaccrual Loans | 3,242 |  | 3,242 |  | 2,647
Total loans, post ASU 2019-04 | 690,504 |  | 690,504 |  | 649,867
Consumer Real Estate [Member] | 90 Days or More Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 387 |  | 387 |  | 561
Consumer Real Estate [Member] | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total | 83 | $ 514 | 83 | $ 514 |
Total Nonaccrual Loans | 176 |  | 176 |  |
Total loans, post ASU 2019-04 | 530 |  | 530 |  |
Consumer Real Estate [Member] | Loan modifications made to borrowers experiencing financial difficulty | Current [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | $ 354 |  | $ 354 |  |
Consumer Real Estate [Member] | Term Extension |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Weighted-Average (in months) | 62 months |  | 62 months |  |
Consumer Real Estate [Member] | Term Extension | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total | $ 83 | $ 514 | $ 83 | $ 514 |
Construction and Land Development [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Weighted-Average (in months) |  | 9 months |  | 9 months |
Total Nonaccrual Loans | 41 |  | 41 |  | 620
Total loans, post ASU 2019-04 | 315,006 |  | 315,006 |  | 327,185
Construction and Land Development [Member] | 90 Days or More Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 41 |  | 41 |  | 620
Construction and Land Development [Member] | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  | $ 748 |  | $ 748 |
Total loans, post ASU 2019-04 | 2,307 |  | 2,307 |  |
Construction and Land Development [Member] | Loan modifications made to borrowers experiencing financial difficulty | Current [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 2,307 |  | 2,307 |  |
Construction and Land Development [Member] | Term Extension | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  | $ 748 |  | $ 748 |
Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Weighted-Average (in months) |  |  |  | 30 months |
Weighted-Average Total Payment Delay |  |  |  | $ 7 |
Total Nonaccrual Loans | 1,990 |  | 1,990 |  | 2,480
Total loans, post ASU 2019-04 | 731,600 |  | 731,600 |  | 645,918
Commercial and Industrial [Member] | 90 Days or More Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 1,653 |  | 1,653 |  | 2,286
Commercial and Industrial [Member] | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total | 27 |  | 27 | 216 |
Total Nonaccrual Loans | 169 |  | 169 |  |
Total loans, post ASU 2019-04 | 185 |  | 185 |  |
Commercial and Industrial [Member] | Loan modifications made to borrowers experiencing financial difficulty | Current [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | $ 16 |  | $ 16 |  |
Commercial and Industrial [Member] | Payment Delay | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  |  |  | 63 |
Commercial and Industrial [Member] | Term Extension |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Weighted-Average (in months) | 38 months |  | 38 months |  |
Commercial and Industrial [Member] | Term Extension | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total | $ 27 |  | $ 27 |  |
Commercial and Industrial [Member] | Payment Delay and Term Extension | Loan modifications made to borrowers experiencing financial difficulty |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total |  |  |  | $ 153 |
Leases [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total Nonaccrual Loans | 2,626 |  | 2,626 |  | 140
Total loans, post ASU 2019-04 | 67,052 |  | 67,052 |  | 68,752
Leases [Member] | 90 Days or More Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | 1,601 |  | 1,601 |  | 212
Consumer and Other [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total Nonaccrual Loans | 4 |  | 4 |  |
Total loans, post ASU 2019-04 | 13,531 |  | 13,531 |  | 13,535
Consumer and Other [Member] | 90 Days or More Past Due [Member] |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Total loans, post ASU 2019-04 | $ 16 |  | $ 16 |  | $ 98

X
- Definition The amount of weighted average payment delay financing receivable modified for debtor experiencing financial difficulty. + References No definition available. + Details
Name: | smbk_FinancingReceivableModifiedWeightedAveragePaymentDelayFromModification
Namespace Prefix: | smbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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
- Definition Amortized cost excluding accrued interest, 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 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual
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://fasb.org/us-gaap/role/ref/otherTransitionRef -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 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -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 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 42 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 Reference 5: 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 + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: 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_FinancingReceivableModifiedWeightedAverageTermIncreaseFromModification
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_LoanRestructuringModificationNameAxis=us-gaap_EntityLoanModificationProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables1To29DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=smbk_FinancialAsset30To89DaysPastDueMember
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=us-gaap_ExtendedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_FinanceLeasesPortfolioSegmentMember
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: |