FAIR VALUE DISCLOSURES, Estimated Fair Values, and Related Carrying Amounts (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Carrying Amount [Member]
Financial assets [Abstract]
Cash and cash equivalents	$ 329,962	$ 486,821
Loans held for investment, net	2,650,709	2,395,479
Loans held for sale (best efforts)	9,709	28,914
Accrued interest receivable	12,408	13,900
Financial liabilities [Abstract]
Deposits	3,460,536	3,341,222
Accrued interest payable	1,747	1,914
Junior subordinated deferrable interest debentures	46,393	46,393
Subordinated debt securities	75,914	75,775
Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	329,962	486,821
Loans held for investment, net	2,623,042	2,397,079
Loans held for sale (best efforts)	10,048	29,500
Accrued interest receivable	12,408	13,900
Financial liabilities [Abstract]
Deposits	3,459,611	3,343,888
Accrued interest payable	1,747	1,914
Junior subordinated deferrable interest debentures	34,598	45,690
Subordinated debt securities	71,962	77,939
Level 1 [Member] | Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	329,962	486,821
Loans held for investment, net	0	0
Loans held for sale (best efforts)	0	0
Accrued interest receivable	0	0
Financial liabilities [Abstract]
Deposits	0	3,004,091
Accrued interest payable	0	0
Junior subordinated deferrable interest debentures	0	0
Subordinated debt securities	0	0
Level 2 [Member] | Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Loans held for investment, net	0	0
Loans held for sale (best efforts)	10,048	29,500
Accrued interest receivable	12,408	13,900
Financial liabilities [Abstract]
Deposits	3,459,611	339,797
Accrued interest payable	1,747	1,914
Junior subordinated deferrable interest debentures	34,598	45,690
Subordinated debt securities	71,962	77,939
Level 3 [Member] | Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Loans held for investment, net	2,623,042	2,397,079
Loans held for sale (best efforts)	0	0
Accrued interest receivable	0	0
Financial liabilities [Abstract]
Deposits	0	0
Accrued interest payable	0	0
Junior subordinated deferrable interest debentures	0	0
Subordinated debt securities	$ 0	$ 0