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SECURITIES (Details 1) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Available-for-sale Securities: |  |
Amortized Cost | $ 448,219 | $ 363,366
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax | 3,740 | 3,890
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | (4,461) | (3,612)
Fair Value | 447,498 | 363,644
Held-to-maturity Securities: |  |
Amortized Cost | 497,688 | 487,076
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 2,429 | 3,556
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (5,923) | (4,982)
Fair Value | 494,194 | 485,650
Available-for-sale Securities and Held-to-maturity Securities: |  |
Amortized Cost | 945,907 | 850,442
Gross Unrealized Gains | 6,169 | 7,446
Gross Unrealized Losses | (10,384) | (8,594)
Fair Value | 941,692 | 849,294
U.S. Government agency securities |  |
Available-for-sale Securities: |  |
Amortized Cost | 35,475 | 24,006
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 86 | 238
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (131) | 0
Fair Value | 35,430 | 24,244
U.S. treasury securities [Member] |  |
Held-to-maturity Securities: |  |
Amortized Cost | 1,006 | 1,007
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 29 | 47
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 | 0
Fair Value | 1,035 | 1,054
Agency mortgage-backed securities [Member] |  |
Available-for-sale Securities: |  |
Amortized Cost | 214,934 | 173,268
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 1,897 | 2,852
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (1,067) | (736)
Fair Value | 215,764 | 175,384
Held-to-maturity Securities: |  |
Amortized Cost | 204,768 | 156,088
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 1,791 | 2,274
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (736) | (858)
Fair Value | 205,823 | 157,504
Agency collateralized mortgage obligations [Member] |  |
Available-for-sale Securities: |  |
Amortized Cost | 124,098 | 101,094
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 78 | 106
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (2,164) | (1,332)
Fair Value | 122,012 | 99,868
Held-to-maturity Securities: |  |
Amortized Cost | 262,998 | 297,445
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 397 | 1,002
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (4,987) | (3,797)
Fair Value | 258,408 | 294,650
State, county, and municipal securities [Member] |  |
Available-for-sale Securities: |  |
Amortized Cost | 2,237 | 3,743
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 37 | 50
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Fair Value | 2,274 | 3,793
Single issuer trust preferred securities issued by banks [Member] |  |
Available-for-sale Securities: |  |
Amortized Cost | 2,012 | 2,311
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 4 | 3
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | (3)
Fair Value | 2,016 | 2,311
Held-to-maturity Securities: |  |
Amortized Cost | 1,500 | 1,500
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 29 | 44
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 | 0
Fair Value | 1,529 | 1,544
Pooled trust preferred securities issued by banks and insurers |  |
Available-for-sale Securities: |  |
Amortized Cost | 2,179 | 2,200
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (539) | (616)
Fair Value | 1,640 | 1,584
Small Business Administration Pooled Securities [Member] |  |
Available-for-sale Securities: |  |
Amortized Cost | 47,852 | 37,561
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 44 | 0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (118) | (372)
Fair Value | 47,778 | 37,189
Held-to-maturity Securities: |  |
Amortized Cost | 27,416 | 31,036
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 183 | 189
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (200) | (327)
Fair Value | 27,399 | 30,898
Marketable securities [Member] |  |
Available-for-sale Securities: |  |
Amortized Cost | 19,432 | 19,183
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 1,594 | 641
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (442) | (553)
Fair Value | $ 20,584 | $ 19,271

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