LOANS HELD FOR INVESTMENT, Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023		Mar. 31, 2022	Dec. 31, 2022
LOANS HELD FOR INVESTMENT [Abstract]
Ratio of allowance for credit losses to loans held for investment	1.42%			1.43%
Allowance for Credit Losses [Roll Forward]
Beginning Balance	$ 39,288		$ 42,098
Provision for credit losses	800	[1]	(2,085)
Charge-offs	(939)		(657)
Recoveries	309		293
Ending Balance	39,560		39,649
Provision for credit loss on loans including off-balance sheet credit exposures	1,010		(2,085)
Provision for off-balance sheet credit exposures	210
Changes in ACL impacted by net charge offs	630
Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	102
Commercial Real Estate [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	13,029		17,245
Provision for credit losses	(475)	[1]	(2,649)
Charge-offs	0		0
Recoveries	0		25
Ending Balance	13,381		14,621
Commercial Real Estate [Member] | Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	827
Commercial [Member] | Specialized [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	3,425		4,363
Provision for credit losses	(11)	[1]	(1,083)
Charge-offs	0		(39)
Recoveries	63		34
Ending Balance	3,510		3,275
Commercial [Member] | Specialized [Member] | Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	33
Commercial [Member] | General [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	9,215		8,466
Provision for credit losses	(237)	[1]	1,659
Charge-offs	(199)		(307)
Recoveries	62		122
Ending Balance	6,267		9,940
Commercial [Member] | General [Member] | Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	(2,574)
Consumer [Member] | 1-4 Family Residential [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	6,194		5,268
Provision for credit losses	635	[1]	(298)
Charge-offs	0		(40)
Recoveries	2		1
Ending Balance	8,531		4,931
Consumer [Member] | 1-4 Family Residential [Member] | Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	1,700
Consumer [Member] | Auto Loans [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	3,926		3,653
Provision for credit losses	298	[1]	68
Charge-offs	(254)		(86)
Recoveries	76		46
Ending Balance	3,714		3,681
Consumer [Member] | Auto Loans [Member] | Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	(332)
Consumer [Member] | Other Consumer [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	1,376		1,357
Provision for credit losses	68	[1]	147
Charge-offs	(214)		(185)
Recoveries	106		65
Ending Balance	1,101		1,384
Consumer [Member] | Other Consumer [Member] | Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	(235)
Construction [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	2,123		1,746
Provision for credit losses	522	[1]	71
Charge-offs	(272)		0
Recoveries	0		0
Ending Balance	3,056		$ 1,817
Construction [Member] | Impact of CECL Adoption [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance	$ 683

[1] The $1.0 million provision for credit loss on the consolidated statement of comprehensive income (loss) includes a $800 thousand provision for credit losses on loans and a $210 thousand provision for off-balance sheet credit exposures for the three months ended March 31, 2023.