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Regulatory Matters (Regulatory Capital Levels) (Details) $ in Thousands | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
SmartFinancial, Inc. [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total Capital (to Risk-Weighted Assets), Actual Amount | $ 449,546 | $ 425,957
Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 380,272 | 360,608
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 380,272 | 360,608
Tier 1 Capital (to Average Assets), Actual Amount | $ 380,272 | $ 360,608
Total Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.1190 | 0.1140
Tier 1 Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.1007 | 0.0965
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Ration (as percent) | 0.1007 | 0.0965
Tier 1 Capital (to Average Assets), Actual Ratio (as a percent) | 0.0813 | 0.0795
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | $ 302,100 | $ 298,966
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 226,575 | 224,224
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 169,931 | 168,168
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Amount | $ 187,074 | $ 181,387
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0800 | 0.0800
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0600 | 0.0600
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0450 | 0.0450
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0400 | 0.0400
Smart Bank [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total Capital (to Risk-Weighted Assets), Actual Amount | $ 447,326 | $ 426,947
Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 420,130 | 403,613
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 420,130 | 403,613
Tier 1 Capital (to Average Assets), Actual Amount | $ 420,130 | $ 403,613
Total Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.1187 | 0.1144
Tier 1 Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.1115 | 0.1082
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Ration (as percent) | 0.1115 | 0.1082
Tier 1 Capital (to Average Assets), Actual Ratio (as a percent) | 0.0900 | 0.0890
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | $ 301,538 | $ 298,476
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 226,153 | 223,857
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 169,615 | 167,892
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Amount | $ 186,792 | $ 181,383
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0800 | 0.0800
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0600 | 0.0600
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0450 | 0.0450
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.0400 | 0.0400
Total Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | $ 376,922 | $ 373,094
Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | 301,538 | 298,476
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | 244,999 | 242,511
Tier 1 Capital (to Average Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | $ 233,490 | $ 226,729
Total Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.1000 | 0.1000
Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.0800 | 0.0800
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.0650 | 0.0650
Tier 1 Capital (to Average Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.0500 | 0.0500

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