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v3.25.1

Regulatory Matters (Regulatory Capital Levels) (Details) $ in Thousands | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
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SmartFinancial, Inc. [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total Capital (to Risk-Weighted Assets), Actual Amount | $ 482,054 | $ 470,635
Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 422,107 | 413,616
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 422,107 | 413,616
Tier 1 Capital (to Average Assets), Actual Amount | $ 422,107 | $ 413,616
Total Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.1118 | 0.111
Tier 1 Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.0979 | 0.0976
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Ration (as percent) | 0.0979 | 0.0976
Tier 1 Capital (to Average Assets), Actual Ratio (as a percent) | 0.0816 | 0.0829
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | $ 345,052 | $ 339,044
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 258,789 | 254,283
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 194,092 | 190,712
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Amount | $ 206,893 | $ 199,585
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.08 | 0.08
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.06 | 0.06
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.045 | 0.045
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.04 | 0.04
Smart Bank [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total Capital (to Risk-Weighted Assets), Actual Amount | $ 489,149 | $ 478,368
Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 453,025 | 445,159
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Amount | 453,025 | 445,159
Tier 1 Capital (to Average Assets), Actual Amount | $ 453,025 | $ 445,159
Total Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.1135 | 0.113
Tier 1 Capital (to Risk-Weighted Assets), Actual Ratio (as a percent) | 0.1051 | 0.1051
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Actual Ration (as percent) | 0.1051 | 0.1051
Tier 1 Capital (to Average Assets), Actual Ratio (as a percent) | 0.0876 | 0.0894
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | $ 344,766 | $ 338,774
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 258,574 | 254,080
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Amount | 193,931 | 190,560
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Amount | $ 206,750 | $ 199,214
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.08 | 0.08
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.06 | 0.06
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.045 | 0.045
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Ratio (as a percent) | 0.04 | 0.04
Total Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | $ 430,957 | $ 423,467
Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | 344,766 | 338,774
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | 280,122 | 275,253
Tier 1 Capital (to Average Assets), Minimum to be well capitalized under prompt corrective action provisions Amount | $ 258,437 | $ 249,017
Total Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.10 | 0.10
Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.08 | 0.08
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.065 | 0.065
Tier 1 Capital (to Average Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) | 0.05 | 0.05

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- Definition Ratio of minimum Common Equity Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B + Details
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