v3.25.3

Other Real Estate (ORE) (Tables) | 9 Months Ended
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Sep. 30, 2025
Real Estate [Abstract] |
Schedule of Components of Other Real Estate Owned | Other real estate owned consists of the following at the dates indicated:
(in thousands) |  | September 30, 2025 |  | December 31, 2024
Other Real Estate Owned: |  |  |  |
Residential |  | $ | 234 |  |  | $ | 226 |
Construction & land development |  | 8,545 |  |  | 3 |
Non-farm non-residential |  | 3,271 |  |  | 90 |
Total Other Real Estate Owned |  | 12,050 |  |  | 319 |
Allowance for Other Real Estate Owned losses |  | — |  |  | — |
Net Other Real Estate Owned |  | $ | 12,050 |  |  | $ | 319 |

X
- Definition Tabular disclosure of the change in other real estate on properties owned acquired by foreclosure. + References No definition available. + Details
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Namespace Prefix: | fgbi_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_RealEstateAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration