SECURITIES, Securities with Unrealized Losses in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Continuous unrealized loss position, fair value [Abstract]
Less than 12 months	$ 10,718	$ 70,672
12 months or more	176,619	199,688
Total	187,337	270,360
Continuous unrealized loss position, unrealized loss [Abstract]
Less than 12 months	(35)	(300)
12 months or more	(2,169)	(5,561)
Total	(2,204)	(5,861)
U.S. Government Sponsored Agency Securities [Member]
Continuous unrealized loss position, fair value [Abstract]
Less than 12 months	0	999
12 months or more	10,288	11,057
Total	10,288	12,056
Continuous unrealized loss position, unrealized loss [Abstract]
Less than 12 months	0	0
12 months or more	(89)	(180)
Total	(89)	(180)
U.S. Government Sponsored Agency MBS - Residential [Member]
Continuous unrealized loss position, fair value [Abstract]
Less than 12 months	10,718	50,923
12 months or more	145,531	158,791
Total	156,249	209,714
Continuous unrealized loss position, unrealized loss [Abstract]
Less than 12 months	(35)	(243)
12 months or more	(1,684)	(4,603)
Total	(1,719)	(4,846)
U.S. Government Sponsored Agency CMO's - Residential [Member]
Continuous unrealized loss position, fair value [Abstract]
Less than 12 months	0	16,359
12 months or more	18,953	26,386
Total	18,953	42,745
Continuous unrealized loss position, unrealized loss [Abstract]
Less than 12 months	0	(41)
12 months or more	(386)	(741)
Total	(386)	(782)
Obligations of States and Political Subdivisions [Member]
Continuous unrealized loss position, fair value [Abstract]
Less than 12 months	0	679
12 months or more	1,847	3,454
Total	1,847	4,133
Continuous unrealized loss position, unrealized loss [Abstract]
Less than 12 months	0	(6)
12 months or more	(10)	(37)
Total	$ (10)	(43)
Other Securities [Member]
Continuous unrealized loss position, fair value [Abstract]
Less than 12 months		1,712
12 months or more		0
Total		1,712
Continuous unrealized loss position, unrealized loss [Abstract]
Less than 12 months		(10)
12 months or more		0
Total		$ (10)