XML 87 R76.htm IDEA: XBRL DOCUMENT
v3.23.1

Commitments and Contingencies (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Jan. 01, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Commitments to extend credit | $ 822,831 |  | $ 911,998
Standby letters of credit | 15,834 |  | 6,897
Allowance for off balance sheet credit | $ 3,200 |  | $ 85
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
Allowance for off balance sheet credit |  | $ 3,000 |

X
- Definition Contractual amount for all off-balance sheet commitments. + References No definition available. + Details
Name: | smbk_OutstandingOffBalanceSheetRisksAmountLiability
Namespace Prefix: | smbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446 + Details
Name: | us-gaap_OffBalanceSheetCreditLossLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unused amount of commitments to extend credit to customers. + References No definition available. + Details
Name: | us-gaap_UnusedCommitmentsToExtendCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | srt_CumulativeEffectPeriodOfAdoptionAxis=srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |