FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial assets:
Investment securities available for sale, at estimated fair value	$ 33,922	$ 37,329
Securities held to maturity, fair value	5,630	6,419
Carrying Amount [Member]
Financial assets:
Cash and due from banks	267,099	82,931
Investment securities available for sale, at estimated fair value	33,922	37,329
Securities held to maturity, fair value	5,681	6,500
Loans, net	1,365,754	1,042,731
Other investments	13,740	12,588
Accrued interest receivable	3,903	2,735
Financial liabilities:
Deposits without stated maturities	1,405,458	903,267
Deposits with stated maturities	83,185	90,513
Borrowed funds	43,750	78,418
Junior subordinated debentures		20,620
Trust preferred securities	20,620
Subordinated debt, net of issurance cost	24,468
Accrued interest payable	547	227
Estimated Fair Value Measurements [Member]
Financial assets:
Cash and due from banks	267,099	82,931
Investment securities available for sale, at estimated fair value	33,922	37,329
Securities held to maturity, fair value	5,630	6,419
Loans, net	1,381,158	1,059,333
Accrued interest receivable	3,903	2,735
Financial liabilities:
Deposits without stated maturities	1,405,458	903,267
Deposits with stated maturities	83,278	90,559
Borrowed funds	43,794	78,872
Junior subordinated debentures		19,998
Trust preferred securities	20,005
Subordinated debt, net of issurance cost	25,000
Accrued interest payable	547	227
Fair Value, Inputs, Level 1 [Member] | Estimated Fair Value Measurements [Member]
Financial assets:
Cash and due from banks	267,099	82,931
Investment securities available for sale, at estimated fair value	2,110	2,063
Accrued interest receivable	2
Financial liabilities:
Deposits without stated maturities	1,405,458	903,267
Accrued interest payable	17	19
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value Measurements [Member]
Financial assets:
Investment securities available for sale, at estimated fair value	31,812	35,266
Securities held to maturity, fair value	5,630	6,419
Accrued interest receivable	135	157
Financial liabilities:
Deposits with stated maturities	83,278	90,559
Borrowed funds	43,794	78,872
Subordinated debt, net of issurance cost	25,000
Accrued interest payable	360	62
Fair Value, Inputs, Level 3 [Member] | Estimated Fair Value Measurements [Member]
Financial assets:
Loans, net	1,381,158	1,059,333
Accrued interest receivable	3,766	2,578
Financial liabilities:
Junior subordinated debentures		19,998
Trust preferred securities	20,005
Accrued interest payable	$ 170	$ 146