Party-in-Interest Transactions (Details) - Colony Bankcorp, Inc. 401(k) Plan - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Party-in-Interest Transactions
Notes receivable from participants	$ 782,794	$ 626,725
Minimum
Party-in-Interest Transactions
Interest rates for participants loans	4.25%
Maximum
Party-in-Interest Transactions
Interest rates for participants loans	9.50%
Company \| Colony Bankcorp, Inc. common stock
Party-in-Interest Transactions
Investment, Number of shares	538,946	527,918
Investments at fair value	$ 9,604,018	$ 8,520,604
Cash Dividends	$ 252,372	$ 219,040

Amount of increase in net asset available for benefit from dividend income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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Number of shares or units of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Amount of unpaid principal plus accrued but unpaid interest for loan from participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Interest rate on participant loan in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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