LOANS HELD FOR INVESTMENT, Summary of Loans by Category (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Category	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Summary of Loans by Category [Abstract]
Loans, gross	$ 2,437,577	$ 2,221,583
Allowance for loan losses	(42,098)	(45,553)	$ (24,197)	$ (23,126)
Loans held for investment, net	2,395,479	2,176,030
Commercial Real Estate [Member]
Summary of Loans by Category [Abstract]
Loans, gross	755,444	663,344
Allowance for loan losses	$ (17,245)	(18,962)	(5,049)	(5,579)
Commercial [Member]
Summary of Loans by Category [Abstract]
Number of sub-categories of loans | Category	2
Commercial [Member] | Specialized [Member]
Summary of Loans by Category [Abstract]
Loans, gross	$ 378,725	311,686
Allowance for loan losses	(4,363)	(5,760)	(2,287)	(2,516)
Commercial [Member] | General [Member]
Summary of Loans by Category [Abstract]
Loans, gross	460,024	518,309
Allowance for loan losses	(8,466)	(9,227)	(9,609)	(8,173)
Consumer [Member] | 1-4 Family Residential [Member]
Summary of Loans by Category [Abstract]
Loans, gross	387,690	360,315
Allowance for loan losses	(5,268)	(4,646)	(2,093)	(2,249)
Consumer [Member] | Auto Loans [Member]
Summary of Loans by Category [Abstract]
Loans, gross	240,719	205,840
Allowance for loan losses	(3,653)	(4,226)	(3,385)	(2,994)
Consumer [Member] | Other Consumer [Member]
Summary of Loans by Category [Abstract]
Loans, gross	68,113	67,595
Allowance for loan losses	(1,357)	(1,671)	(1,341)	(1,192)
Construction [Member]
Summary of Loans by Category [Abstract]
Loans, gross	146,862	94,494
Allowance for loan losses	$ (1,746)	$ (1,061)	$ (433)	$ (423)