SECURITIES (Available-for-sale Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 416,731	$ 411,424
Gross Unrealized Gains	(2,713)	(1,812)
Gross Unrealized Losses	1,190	2,215
Fair Value	418,254	411,021
U.S. Government and agency obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,043	29,973
Gross Unrealized Gains	0	(8)
Gross Unrealized Losses	51	211
Fair Value	11,992	29,770
Total municipal bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	67,459	49,959
Gross Unrealized Gains	(300)	(190)
Gross Unrealized Losses	102	121
Fair Value	67,657	50,028
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,000	5,000
Gross Unrealized Gains	(22)	(18)
Gross Unrealized Losses	0	0
Fair Value	5,022	5,018
Total mortgage-backed or related securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	300,929	300,979
Gross Unrealized Gains	(2,391)	(1,429)
Gross Unrealized Losses	520	1,598
Fair Value	302,800	300,810
Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	31,300	25,513
Gross Unrealized Gains	0	(167)
Gross Unrealized Losses	517	285
Fair Value	$ 30,783	$ 25,395