XML 78 R67.htm IDEA: XBRL DOCUMENT v3.23.2

SUBSEQUENT EVENTS/OTHER (Details) $ in Millions	Apr. 30, 2023 USD ($)
Subsequent Events [Abstract]
Government grants, eligibility, amount	$ 6.2

X

- Definition

Government Grants, Eligibility, Amount

+ References

No definition available.

+ Details

Name:	fbms_GovernmentGrantsEligibilityAmount
Namespace Prefix:	fbms_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration