LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Loan Portfolio by Type of Loan (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Loans held for investment:
Total loans	$ 2,136,537	$ 2,322,576
Deferred loan fees, net	(397)	(775)
Allowance for credit losses	(28,543)	(30,920)	$ (31,140)	$ (31,974)
Total net loans	2,107,597	2,290,881
Commercial and industrial
Loans held for investment:
Total loans	245,738	287,565
Allowance for credit losses	(2,929)	(3,719)	(3,823)	(4,382)
Construction and development
Loans held for investment:
Total loans	213,014	296,639
Allowance for credit losses	(2,534)	(3,623)	(3,632)	(4,889)
Commercial real estate
Loans held for investment:
Total loans	866,112	923,195
Allowance for credit losses	(12,173)	(12,257)	(13,093)	(12,658)
Farmland
Loans held for investment:
Total loans	169,116	186,295
Allowance for credit losses	(1,985)	(2,231)	(2,119)	(2,008)
1-4 family residential
Loans held for investment:
Total loans	524,245	514,603
Allowance for credit losses	(7,396)	(7,470)	(6,778)	(6,617)
Multi-family residential
Loans held for investment:
Total loans	54,158	44,292
Allowance for credit losses	(544)	(521)	(471)	(490)
Consumer
Loans held for investment:
Total loans	52,530	57,059
Allowance for credit losses	(841)	(945)	(1,080)	(778)
Agricultural
Loans held for investment:
Total loans	11,293	12,685
Allowance for credit losses	(138)	(152)	(141)	(149)
Overdrafts
Loans held for investment:
Total loans	331	243
Allowance for credit losses	$ (3)	$ (2)	$ (3)	$ (3)