XML 128 R108.htm IDEA: XBRL DOCUMENT v3.25.0.1

Commitments and Off-balance Sheet Items - Narrative (Details)	12 Months Ended
	Dec. 31, 2024
Minimum
Commitments and Contingent Liabilities [Line Items]
Fixed rates on commitments to fund loans (as percent)	2.00%
Maturity of commitments to fund loans (in years)	1 year
Maximum
Commitments and Contingent Liabilities [Line Items]
Fixed rates on commitments to fund loans (as percent)	24.00%
Maturity of commitments to fund loans (in years)	27 years

X

- References

No definition available.

+ Details

Name:	gabc_CommitmentsAndContingentLiabilitiesLineItems
Namespace Prefix:	gabc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of loans and leases receivable fixed commitment interest rates during the period.

+ References

No definition available.

+ Details

Name:	gabc_LoansAndLeasesReceivableFixedCommitmentInterestRates
Namespace Prefix:	gabc_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fixed rate commitments to fund loans maturity period.

+ References

No definition available.

+ Details

Name:	gabc_LoansAndLeasesReceivableFixedCommitmentMaturity
Namespace Prefix:	gabc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: