v3.26.1
Deposits (Details) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Deposits [Abstract]
Overdrawn deposit balances classified as consumer loans
$ 201,000
$ 187,000
X
- Definition
Amount of overdrawn time deposit liabilities classified as consumer loans.
+ References
No definition available.
+ Details
Name:
fmcb_OverdrawnDepositBalancesClassifiedAsConsumerLoans
Namespace Prefix:
fmcb_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_DepositsAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration