SECURITIES (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities:
Amortized Cost	$ 363,366	$ 365,140
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax	3,890	5,252
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(3,612)	(3,143)
Fair Value	363,644	367,249
Held-to-maturity Securities:
Amortized Cost	487,076	477,507
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	3,556	5,177
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(4,982)	(3,935)
Fair Value	485,650	478,749
Available-for-sale Securities and Held-to-maturity Securities:
Amortized Cost	850,442	842,647
Gross Unrealized Gains	7,446	10,429
Gross Unrealized Losses	(8,594)	(7,078)
Fair Value	849,294	845,998
U.S. Government agency securities
Available-for-sale Securities:
Amortized Cost	24,006	29,958
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	238	261
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	(4)
Fair Value	24,244	30,215
U.S. treasury securities [Member]
Held-to-maturity Securities:
Amortized Cost	1,007	1,009
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	47	55
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Fair Value	1,054	1,064
Agency mortgage-backed securities [Member]
Available-for-sale Securities:
Amortized Cost	173,268	207,693
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	2,852	4,227
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(736)	(983)
Fair Value	175,384	210,937
Held-to-maturity Securities:
Amortized Cost	156,088	167,134
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	2,274	3,460
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(858)	(219)
Fair Value	157,504	170,375
Agency collateralized mortgage obligations [Member]
Available-for-sale Securities:
Amortized Cost	101,094	64,157
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	106	179
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(1,332)	(752)
Fair Value	99,868	63,584
Held-to-maturity Securities:
Amortized Cost	297,445	267,348
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,002	1,195
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(3,797)	(3,652)
Fair Value	294,650	264,891
State, county, and municipal securities [Member]
Available-for-sale Securities:
Amortized Cost	3,743	4,543
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	50	116
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Fair Value	3,793	4,659
Held-to-maturity Securities:
Amortized Cost	0	225
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	0	2
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Fair Value	0	227
Single issuer trust preferred securities issued by banks [Member]
Available-for-sale Securities:
Amortized Cost	2,311	2,865
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	3	8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(3)	(81)
Fair Value	2,311	2,792
Held-to-maturity Securities:
Amortized Cost	1,500	1,500
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	44	22
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Fair Value	1,544	1,522
Pooled trust preferred securities issued by banks and insurers
Available-for-sale Securities:
Amortized Cost	2,200	2,217
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(616)	(645)
Fair Value	1,584	1,572
Small Business Administration Pooled Securities [Member]
Available-for-sale Securities:
Amortized Cost	37,561	40,472
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	87
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(372)	(110)
Fair Value	37,189	40,449
Held-to-maturity Securities:
Amortized Cost	31,036	35,291
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	189	437
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(327)	(64)
Fair Value	30,898	35,664
Marketable securities [Member]
Available-for-sale Securities:
Amortized Cost	19,183	13,235
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	641	374
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(553)	(568)
Fair Value	19,271	13,041
Corporate debt securities [Member]
Held-to-maturity Securities:
Amortized Cost	0	5,000
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	0	6
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Fair Value	$ 0	$ 5,006