EMPLOYEE BENEFITS (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2016 monthlyPayment keyExecutive	Dec. 31, 2014 keyExecutive
Employee Benefits [Line Items]
Defined contribution plan, employer matching contribution, percent of employees' gross pay	50.00%
Deferred compensation arrangement with individual, contributions by employer	$ 1,200	$ 1,100	$ 990
Requisite service time (in years)	1 year
Requisite minimum age (in years)	21 years
Service time, vesting period (in years)	5 years
Employee stock ownership plan (ESOP), shares, deferred shares | shares	5,728
Employee stock ownership plan (ESOP), preferred shares, fair value	$ 183
Employee stock ownership plan (ESOP), compensation expense	33	3	26
SERP balance	3,700	2,700
Accrued employee benefits	945	$ 945	$ 676
Supplemental Employee Retirement Plan
Employee Benefits [Line Items]
Number of employees covered by plan | keyExecutive					3
Number of additional employees covered by plan | keyExecutive				8
Number of monthly payments after retirement or separation | monthlyPayment				180
Defined benefit plan, retirement age (in years)				65 years
Iberville Bank
Employee Benefits [Line Items]
Deferred compensation share-based arrangements, liability, current and noncurrent	833
Deferred compensation arrangement with individual, allocated share-based compensation expense	21
Southwest
Employee Benefits [Line Items]
Deferred compensation share-based arrangements, liability, current and noncurrent	1,100
Deferred compensation arrangement with individual, allocated share-based compensation expense	46
FMB Banking Corporation
Employee Benefits [Line Items]
Deferred compensation share-based arrangements, liability, current and noncurrent	2,800
Deferred compensation arrangement with individual, allocated share-based compensation expense	190
SWG acquisition
Employee Benefits [Line Items]
Deferred compensation share-based arrangements, liability, current and noncurrent	353
Deferred compensation arrangement with individual, allocated share-based compensation expense	$ 19