INVESTMENT SECURITIES AVAILABLE FOR SALE (Schedule of Amortized Cost and Approximate Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 330,560	$ 307,146
Gross Unrecognized Gains	752	1,133
Gross Unrecognized Losses	(3,679)	(2,891)
Fair Value	327,633	305,388
U.S. Government-Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	44,476	21,991
Gross Unrecognized Gains
Gross Unrecognized Losses	(775)	(474)
Fair Value	43,701	21,517
Mortgage-Backed Securities-Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	244,913	238,271
Gross Unrecognized Gains	583	860
Gross Unrecognized Losses	(2,380)	(1,514)
Fair Value	243,116	237,617
SBA Pool Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,262	6,778
Gross Unrecognized Gains
Gross Unrecognized Losses	(57)	(65)
Fair Value	5,205	6,713
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	24,910	29,107
Gross Unrecognized Gains	87	160
Gross Unrecognized Losses	(129)	(274)
Fair Value	24,868	28,993
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,000	3,000
Gross Unrecognized Gains	82	113
Gross Unrecognized Losses
Fair Value	3,082	3,113
Single-Issuer Trust Preferred Security [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,999	2,999
Gross Unrecognized Gains
Gross Unrecognized Losses	(162)	(389)
Fair Value	2,837	2,610
CRA Investment Fund [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,000	5,000
Gross Unrecognized Gains
Gross Unrecognized Losses	(176)	(175)
Fair Value	$ 4,824	$ 4,825