LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Allowance for credit losses:
Beginning	$ 18,947	$ 16,674	$ 13,888	$ 16,952
Charge-offs	(452)		(452)	(390)
Recoveries	14	4	18	12
Provision expense	(418)		(418)	104
Ending balance	18,091	16,678	18,091	16,678
Construction and development
Allowance for credit losses:
Beginning	45	93	124	100
Provision expense	(15)	47	(15)	40
Ending balance	30	140	30	140
Commercial real estate
Allowance for credit losses:
Beginning	6,088	4,294	2,811	4,146
Charge-offs	(231)		(231)
Recoveries	1	2	3	4
Provision expense	350	(757)	350	(611)
Ending balance	6,208	3,539	6,208	3,539
Commercial and industrial
Allowance for credit losses:
Beginning	1,021	4,441	1,326	4,989
Charge-offs	(221)		(221)	(390)
Recoveries	13	2	15	3
Provision expense	(160)	(224)	(160)	(383)
Ending balance	653	4,219	653	4,219
Residential real estate
Allowance for credit losses:
Beginning	11,792	7,624	9,626	7,717
Provision expense	(593)	1,054	(593)	961
Ending balance	11,199	8,678	11,199	8,678
Consumer and Other
Allowance for credit losses:
Beginning	1	5	1
Recoveries				5
Provision expense		1		1
Ending balance	$ 1	6	1	6
Unallocated
Allowance for credit losses:
Beginning		217
Provision expense		(121)		96
Ending balance		$ 96		$ 96
2016-13 | Adjustment
Allowance for credit losses:
Beginning			5,055
2016-13 | Adjustment | Construction and development
Allowance for credit losses:
Beginning			(79)
2016-13 | Adjustment | Commercial real estate
Allowance for credit losses:
Beginning			3,275
2016-13 | Adjustment | Commercial and industrial
Allowance for credit losses:
Beginning			(307)
2016-13 | Adjustment | Residential real estate
Allowance for credit losses:
Beginning			$ 2,166