XML 79 R62.htm IDEA: XBRL DOCUMENT
v3.25.0.1

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Loan Portfolio by Type of Loan (Details) (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Receivables [Abstract] |  |
Accrued interest receivable on loans | $ 8,399 | $ 9,510

X
- Definition Financing receivable accrued interest. + References No definition available. + Details
Name: | gnty_FinancingReceivableAccruedInterest
Namespace Prefix: | gnty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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