| Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
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Actual |
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For Capital Adequacy Purposes |
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To Be Well Capitalized Under Prompt Corrective Action Provisions |
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|
Amount |
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|
Ratio |
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|
Amount |
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|
Ratio |
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|
Amount |
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|
Ratio |
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| As of December 31, 2023: |
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|
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| CET I Capital to Risk Weighted Assets: |
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|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
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| Consolidated |
|
$ |
1,473,885 |
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|
|
10.91 |
% |
|
$ |
607,690 |
|
|
|
4.50 |
% |
|
|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
|
|
1,535,757 |
|
|
|
11.37 |
% |
|
|
607,665 |
|
|
|
4.50 |
% |
|
$ |
877,738 |
|
|
|
6.50 |
% |
| Tier I Capital to Risk Weighted Assets: |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Consolidated |
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|
1,474,385 |
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|
10.92 |
% |
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|
810,253 |
|
|
|
6.00 |
% |
|
|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
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|
1,536,257 |
|
|
|
11.38 |
% |
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|
810,220 |
|
|
|
6.00 |
% |
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|
1,080,293 |
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|
|
8.00 |
% |
| Total Capital to Risk Weighted Assets: |
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|
|
|
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|
|
|
|
|
|
|
|
|
|
|
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|
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| Consolidated |
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|
1,681,028 |
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|
12.45 |
% |
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|
1,080,338 |
|
|
|
8.00 |
% |
|
|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
|
|
1,690,149 |
|
|
|
12.52 |
% |
|
|
1,080,293 |
|
|
|
8.00 |
% |
|
|
1,350,366 |
|
|
|
10.00 |
% |
| Tier I Capital to Average Assets: |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Consolidated |
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1,474,385 |
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|
9.12 |
% |
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|
646,710 |
|
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|
4.00 |
% |
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|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
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|
1,536,257 |
|
|
|
9.50 |
% |
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|
646,675 |
|
|
|
4.00 |
% |
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|
808,343 |
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|
5.00 |
% |
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|
| As of December 31, 2022: |
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|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
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| CET I Capital to Risk Weighted Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Consolidated |
|
$ |
1,326,035 |
|
|
|
9.55 |
% |
|
$ |
624,986 |
|
|
|
4.50 |
% |
|
|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
|
|
1,385,697 |
|
|
|
9.98 |
% |
|
|
624,942 |
|
|
|
4.50 |
% |
|
$ |
902,694 |
|
|
|
6.50 |
% |
| Tier I Capital to Risk Weighted Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Consolidated |
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|
1,326,535 |
|
|
|
9.95 |
% |
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|
833,315 |
|
|
|
6.00 |
% |
|
|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
|
|
1,386,197 |
|
|
|
9.98 |
% |
|
|
833,256 |
|
|
|
6.00 |
% |
|
|
1,111,008 |
|
|
|
8.00 |
% |
| Total Capital to Risk Weighted Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Consolidated |
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|
1,532,134 |
|
|
|
11.03 |
% |
|
|
1,111,086 |
|
|
|
8.00 |
% |
|
|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
|
|
1,533,069 |
|
|
|
11.04 |
% |
|
|
1,111,008 |
|
|
|
8.00 |
% |
|
|
1,388,760 |
|
|
|
10.00 |
% |
| Tier I Capital to Average Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Consolidated |
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|
1,326,535 |
|
|
|
9.29 |
% |
|
|
570,960 |
|
|
|
4.00 |
% |
|
|
N/A |
|
|
|
N/A |
|
| ServisFirst Bank |
|
|
1,386,197 |
|
|
|
9.71 |
% |
|
|
570,924 |
|
|
|
4.00 |
% |
|
|
713,656 |
|
|
|
5.00 |
% |
|