FAIR VALUE DISCLOSURES, Estimated Fair Values, and Related Carrying Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Carrying Amount [Member]
Financial assets [Abstract]
Cash and cash equivalents	$ 413,406	$ 300,307
Loans, net	2,197,657	2,176,030
Accrued interest receivable	11,277	15,233
Bank-owned life insurance	71,061	70,731
Financial liabilities [Abstract]
Deposits	3,155,632	2,974,351
Accrued interest payable	1,480	2,113
Notes payable & other borrowings	25,000	75,000
Junior subordinated deferrable interest debentures	46,393	46,393
Subordinated debt securities	75,635	75,589
Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	413,406	300,307
Loans, net	2,200,173	2,179,573
Accrued interest receivable	11,277	15,233
Bank-owned life insurance	71,061	70,731
Financial liabilities [Abstract]
Deposits	3,158,150	2,979,439
Accrued interest payable	1,480	2,113
Notes payable & other borrowings	25,000	75,000
Junior subordinated deferrable interest debentures	45,690	45,690
Subordinated debt securities	77,799	76,889
Level 1 [Member]
Financial assets [Abstract]
Cash and cash equivalents	413,406	300,307
Loans, net	0	0
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Financial liabilities [Abstract]
Deposits	2,974,868	2,649,830
Accrued interest payable	0	0
Notes payable & other borrowings	0	0
Junior subordinated deferrable interest debentures	0	0
Subordinated debt securities	0	0
Level 2 [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Loans, net	0	0
Accrued interest receivable	11,277	15,233
Bank-owned life insurance	71,061	70,731
Financial liabilities [Abstract]
Deposits	183,282	329,609
Accrued interest payable	1,480	2,113
Notes payable & other borrowings	25,000	75,000
Junior subordinated deferrable interest debentures	45,690	45,690
Subordinated debt securities	77,799	76,889
Level 3 [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Loans, net	2,200,173	2,179,573
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Financial liabilities [Abstract]
Deposits	0	0
Accrued interest payable	0	0
Notes payable & other borrowings	0	0
Junior subordinated deferrable interest debentures	0	0
Subordinated debt securities	$ 0	$ 0