FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets:
Cash and due from banks	$ 370,950	$ 261,231
Securities available for sale	30,276	32,157
Securities held to maturity	5,022	5,330
Loans, net	1,570,421	1,410,860
Other investments
Certificates of deposit	2,000	2,000
Accrued interest receivable	4,366	4,421
Financial liabilities:
Deposits without stated maturities	1,546,510	1,324,110
Deposits with stated maturities	71,401	80,079
Borrowed Funds	33,201	42,188
Trust preferred securities payable	19,977	19,997
Subordinated debt, net of issuance cost	25,375	25,500
Accrued interest payable	454	749
Carrying Amount
Financial assets:
Cash and due from banks	370,950	261,231
Securities available for sale	30,276	32,157
Securities held to maturity	5,212	5,428
Loans, net	1,509,906	1,405,009
Other investments
FRB Stock	7,214	3,911
FHLB Stock	2,352	2,766
SBA Loan Fund	5,000	5,000
Certificates of deposit	2,000	2,000
Accrued interest receivable	4,366	4,421
Financial liabilities:
Deposits without stated maturities	1,546,510	1,324,110
Deposits with stated maturities	70,606	80,245
Borrowed Funds	33,000	42,198
Trust preferred securities payable	20,620	20,620
Subordinated debt, net of issuance cost	24,503	24,489
Accrued interest payable	454	749
Fair Value, Inputs, Level 1 | Total Fair Value
Financial assets:
Cash and due from banks	370,950	261,231
Securities available for sale	2,085	2,108
Securities held to maturity	0	0
Loans, net	0	0
Other investments
Certificates of deposit	2,000	2,000
Accrued interest receivable	21	11
Financial liabilities:
Deposits without stated maturities	1,546,510	1,324,110
Deposits with stated maturities	0	0
Borrowed Funds	0	0
Trust preferred securities payable	0	0
Subordinated debt, net of issuance cost	0	0
Accrued interest payable	19	27
Fair Value, Inputs, Level 2 | Total Fair Value
Financial assets:
Cash and due from banks	0	0
Securities available for sale	28,191	30,049
Securities held to maturity	5,022	5,330
Loans, net	0	0
Other investments
Certificates of deposit	0	0
Accrued interest receivable	127	116
Financial liabilities:
Deposits without stated maturities	0	0
Deposits with stated maturities	71,401	80,079
Borrowed Funds	33,201	42,188
Trust preferred securities payable	0	0
Subordinated debt, net of issuance cost	25,375	25,500
Accrued interest payable	361	258
Fair Value, Inputs, Level 3 | Total Fair Value
Financial assets:
Cash and due from banks	0	0
Securities available for sale	0	0
Securities held to maturity	0	0
Loans, net	1,570,421	1,410,860
Other investments
Certificates of deposit	0	0
Accrued interest receivable	4,218	4,294
Financial liabilities:
Deposits without stated maturities	0	0
Deposits with stated maturities	0	0
Borrowed Funds	0	0
Trust preferred securities payable	19,977	19,997
Subordinated debt, net of issuance cost	0	0
Accrued interest payable	$ 74	$ 464