LOANS HELD FOR INVESTMENT, Summary of Internal Classifications of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans by Internal Classifications [Abstract]
Loans	$ 2,453,631	$ 2,437,577
Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	2,376,192	2,371,284
Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	1,662	1,676
Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	75,777	64,617
Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial Real Estate [Member]
Loans by Internal Classifications [Abstract]
Loans	771,490	755,444
Commercial Real Estate [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	731,097	713,852
Commercial Real Estate [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial Real Estate [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	40,393	41,592
Commercial Real Estate [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial [Member] | Specialized [Member]
Loans by Internal Classifications [Abstract]
Loans	350,143	378,725
Commercial [Member] | Specialized [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	348,785	372,797
Commercial [Member] | Specialized [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial [Member] | Specialized [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	1,358	5,928
Commercial [Member] | Specialized [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial [Member] | General [Member]
Loans by Internal Classifications [Abstract]
Loans	475,593	460,024
Commercial [Member] | General [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	450,144	450,790
Commercial [Member] | General [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	1,662	1,676
Commercial [Member] | General [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	23,787	7,558
Commercial [Member] | General [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | 1-4 Family Residential [Member]
Loans by Internal Classifications [Abstract]
Loans	378,361	387,690
Consumer [Member] | 1-4 Family Residential [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	369,181	379,458
Consumer [Member] | 1-4 Family Residential [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | 1-4 Family Residential [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	9,180	8,232
Consumer [Member] | 1-4 Family Residential [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Auto Loans [Member]
Loans by Internal Classifications [Abstract]
Loans	255,703	240,719
Consumer [Member] | Auto Loans [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	255,518	239,869
Consumer [Member] | Auto Loans [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Auto Loans [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	185	850
Consumer [Member] | Auto Loans [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Other Consumer [Member]
Loans by Internal Classifications [Abstract]
Loans	73,245	68,113
Consumer [Member] | Other Consumer [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	73,049	67,822
Consumer [Member] | Other Consumer [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Other Consumer [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	196	291
Consumer [Member] | Other Consumer [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Construction [Member]
Loans by Internal Classifications [Abstract]
Loans	149,096	146,862
Construction [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	148,418	146,696
Construction [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Construction [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	678	166
Construction [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	$ 0	$ 0