LOANS HELD FOR INVESTMENT, Investment in loans Disaggregated Based on Method of Evaluating Impairment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Recorded Investment [Abstract]
Individually Evaluated	$ 10,535	$ 13,021
Collectively Evaluated	2,292,927	2,208,562
Allowance for Loan Losses [Abstract]
Individually Evaluated	760	1,095
Collectively Evaluated	42,203	44,458
Commercial Real Estate [Member]
Recorded Investment [Abstract]
Individually Evaluated	2,529	6,273
Collectively Evaluated	679,488	657,071
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	580
Collectively Evaluated	17,288	18,382
Commercial [Member] \| Specialized [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	323,576	311,686
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	4,823	5,760
Commercial [Member] \| General [Member]
Recorded Investment [Abstract]
Individually Evaluated	5,709	4,626
Collectively Evaluated	486,605	513,683
Allowance for Loan Losses [Abstract]
Individually Evaluated	640	515
Collectively Evaluated	8,308	8,712
Consumer [Member] \| 1-4 Family Residential [Member]
Recorded Investment [Abstract]
Individually Evaluated	2,297	2,122
Collectively Evaluated	373,005	358,193
Allowance for Loan Losses [Abstract]
Individually Evaluated	120	0
Collectively Evaluated	4,944	4,646
Consumer [Member] \| Auto Loans [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	230,570	205,840
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	3,815	4,226
Consumer [Member] \| Other Consumer [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	68,098	67,595
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	1,434	1,671
Construction [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	131,585	94,494
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	$ 1,591	$ 1,061

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- References

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