FAIR VALUE DISCLOSURES, Estimated Fair Values, and Related Carrying Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Carrying Amount [Member]
Financial assets [Abstract]
Cash and cash equivalents	$ 339,410	$ 245,989
Loans, net	1,891,802	1,934,071
Accrued interest receivable	9,962	12,957
Bank-owned life insurance	57,499	57,172
Financial liabilities [Abstract]
Deposits	2,304,929	2,277,454
Accrued interest payable	2,360	2,042
Notes payable & other borrowings	95,000	95,000
Junior subordinated deferrable interest debentures	46,393	46,393
Subordinated debt securities	26,472	34,002
Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	339,410	245,989
Loans, net	1,883,622	1,923,167
Accrued interest receivable	9,962	12,957
Bank-owned life insurance	57,499	57,172
Financial liabilities [Abstract]
Deposits	2,307,176	2,278,449
Accrued interest payable	2,360	2,042
Notes payable & other borrowings	95,000	95,000
Junior subordinated deferrable interest debentures	46,393	46,393
Subordinated debt securities	26,472	34,002
Level 1 [Member]
Financial assets [Abstract]
Cash and cash equivalents	339,410	245,989
Loans, net	0	0
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Financial liabilities [Abstract]
Deposits	2,112,179	1,965,925
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	9,962	12,957
Bank-owned life insurance	57,499	57,172
Financial liabilities [Abstract]
Deposits	194,997	312,524
Accrued interest payable	2,360	2,042
Notes payable & other borrowings	95,000	95,000
Junior subordinated deferrable interest debentures	46,393	46,393
Subordinated debt securities	26,472	34,002
Level 3 [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Loans, net	1,883,622	1,923,167
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