SECURITIES - Investment Securities Available for Sale in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Available-for-sale securities in a continuous unrealized loss position, fair value [Abstract]
Less than 12 months	$ 0	$ 195,983
12 months or longer	238	843
Total	238	196,826
Available-for-sale securities in a continuous unrealized loss position, unrealized losses [Abstract]
Less than 12 months	0	1,761
12 months or longer	1	3
Total	1	1,764
Obligations of U.S. Government and U.S. Government sponsored enterprises [Member]
Available-for-sale securities in a continuous unrealized loss position, fair value [Abstract]
Less than 12 months		15,169
12 months or longer		0
Total		15,169
Available-for-sale securities in a continuous unrealized loss position, unrealized losses [Abstract]
Less than 12 months		16
12 months or longer		0
Total		16
Mortgage-Backed Securities, Residential [Member]
Available-for-sale securities in a continuous unrealized loss position, fair value [Abstract]
Less than 12 months		177,058
12 months or longer		0
Total		177,058
Available-for-sale securities in a continuous unrealized loss position, unrealized losses [Abstract]
Less than 12 months		1,741
12 months or longer		0
Total		1,741
Obligations of States and Political Subdivisions [Member]
Available-for-sale securities in a continuous unrealized loss position, fair value [Abstract]
Less than 12 months		3,756
12 months or longer		592
Total		4,348
Available-for-sale securities in a continuous unrealized loss position, unrealized losses [Abstract]
Less than 12 months		4
12 months or longer		2
Total		6
SBA Loans Pools [Member]
Available-for-sale securities in a continuous unrealized loss position, fair value [Abstract]
Less than 12 months	0	0
12 months or longer	238	251
Total	238	251
Available-for-sale securities in a continuous unrealized loss position, unrealized losses [Abstract]
Less than 12 months	0	0
12 months or longer	1	1
Total	$ 1	$ 1