INVESTMENT SECURITIES (Schedule of Amortized Cost and Fair Value of Securities Classified by Contractual Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost
Within one year	$ 0	$ 25
One to five years	0	0
Five to ten years	0	0
After ten years	0	0
Amortized Cost, total	0	25
Amortized Cost, Held to maturity	3,938	4,571
Fair Value
Within one year	0	25
One to five years	0	0
Five to ten years	0	0
After ten years	0	0
Fair Value, total	0	25
Fair Value, Held to maturity	3,914	4,403
Amortized Cost
Within one year	0	257
One to five years	0	0
Five to ten years	25,000	0
After ten years	0	817
Amortized Cost, total	25,000	1,074
Amortized Cost, Available-for-sale Securities	248,142	31,041
Fair Value
Within one year	0	258
One to five years	0	0
Five to ten years	25,309	0
After ten years	0	819
Fair Value, total	25,309	1,077
Fair Value, Available-for-sale Securities	250,674	30,439
Available-for-sale securities pledged to secure customer deposit	223,800	0
Residential mortgage-backed securities
Amortized Cost
Amortized Cost, Held to maturity	3,938	4,546
Fair Value
Fair Value, Held to maturity	3,914	4,378
Amortized Cost
Amortized Cost, Available-for-sale Securities	190,244	24,093
Fair Value
Fair Value, Available-for-sale Securities	192,005	23,513
Commercial mortgage-backed securities
Amortized Cost
Amortized Cost, Held to maturity	0	0
Fair Value
Fair Value, Held to maturity	0	0
Amortized Cost
Amortized Cost, Available-for-sale Securities	32,898	5,874
Fair Value
Fair Value, Available-for-sale Securities	33,360	$ 5,849
U.S. Government agency securities
Amortized Cost
Amortized Cost, Held to maturity	0
Fair Value
Fair Value, Held to maturity	0
Amortized Cost
Amortized Cost, Available-for-sale Securities	0
Fair Value
Fair Value, Available-for-sale Securities	$ 0