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INVESTMENT SECURITIES AVAILABLE FOR SALE (Schedule of Amortized Cost and Approximate Fair Value) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 330,560 | $ 307,146
Gross Unrecognized Gains | 752 | 1,133
Gross Unrecognized Losses | (3,679) | (2,891)
Fair Value | 327,633 | 305,388
U.S. Government-Sponsored Entities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 44,476 | 21,991
Gross Unrecognized Gains |  |
Gross Unrecognized Losses | (775) | (474)
Fair Value | 43,701 | 21,517
Mortgage-Backed Securities-Residential [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 244,913 | 238,271
Gross Unrecognized Gains | 583 | 860
Gross Unrecognized Losses | (2,380) | (1,514)
Fair Value | 243,116 | 237,617
SBA Pool Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 5,262 | 6,778
Gross Unrecognized Gains |  |
Gross Unrecognized Losses | (57) | (65)
Fair Value | 5,205 | 6,713
State and Political Subdivisions [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 24,910 | 29,107
Gross Unrecognized Gains | 87 | 160
Gross Unrecognized Losses | (129) | (274)
Fair Value | 24,868 | 28,993
Corporate Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 3,000 | 3,000
Gross Unrecognized Gains | 82 | 113
Gross Unrecognized Losses |  |
Fair Value | 3,082 | 3,113
Single-Issuer Trust Preferred Security [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 2,999 | 2,999
Gross Unrecognized Gains |  |
Gross Unrecognized Losses | (162) | (389)
Fair Value | 2,837 | 2,610
CRA Investment Fund [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 5,000 | 5,000
Gross Unrecognized Gains |  |
Gross Unrecognized Losses | (176) | (175)
Fair Value | $ 4,824 | $ 4,825

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
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