INVESTMENT SECURITIES AVAILABLE FOR SALE (Schedule of Securities with Continuous Unrealized Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Approximate Fair Value
Less Than 12 Months	$ 136,749	$ 183,973
12 Months or Longer	50,062	17,364
Total	186,811	201,337
Unrealized Losses
Less Than 12 Months	(981)	(2,290)
12 Months or Longer	(1,053)	(601)
Total	(2,034)	(2,891)
U.S. Government-Sponsored Entities [Member]
Approximate Fair Value
Less Than 12 Months	31,662	21,517
12 Months or Longer	4,813
Total	36,475	21,517
Unrealized Losses
Less Than 12 Months	(330)	(474)
12 Months or Longer	(183)
Total	(513)	(474)
Mortgage-Backed Securities-Residential [Member]
Approximate Fair Value
Less Than 12 Months	97,456	151,114
12 Months or Longer	30,603	5,147
Total	128,059	156,261
Unrealized Losses
Less Than 12 Months	(611)	(1,472)
12 Months or Longer	(515)	(42)
Total	(1,126)	(1,514)
SBA Pool Securities [Member]
Approximate Fair Value
Less Than 12 Months
12 Months or Longer	5,936	6,713
Total	5,936	6,713
Unrealized Losses
Less Than 12 Months
12 Months or Longer	(66)	(65)
Total	(66)	(65)
State and Political Subdivisions [Member]
Approximate Fair Value
Less Than 12 Months	7,631	9,412
12 Months or Longer	993
Total	8,624	9,412
Unrealized Losses
Less Than 12 Months	(40)	(274)
12 Months or Longer	(6)
Total	(46)	(274)
Single-Issuer Trust Preferred Security [Member]
Approximate Fair Value
Less Than 12 Months
12 Months or Longer	2,858	2,610
Total	2,858	2,610
Unrealized Losses
Less Than 12 Months
12 Months or Longer	(142)	(389)
Total	(142)	(389)
CRA Investment Fund [Member]
Approximate Fair Value
Less Than 12 Months		1,930
12 Months or Longer	4,859	2,894
Total	4,859	4,824
Unrealized Losses
Less Than 12 Months		(70)
12 Months or Longer	(141)	(105)
Total	$ (141)	$ (175)