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RETIREMENT PLANS (Narrative) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($) person | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Accumulated Benefit Obligation | $ 30,228 | $ 27,508 |
Corporation Common Stock Included in Equity Securities | $ 2,114 | $ 2,175 |
Corporation Common Stock Included in Equity Securities, Percentage of Total Plan Assets | 5.00% | 6.00% |
Percentage of participants average monthly pay used to calculate benefit accruals | 0.75% |  |
Maximum years of benefit used to calculate benefit accruals | 25 years |  |
Number of active, vested terminated, and retired persons in the Plan | person | 353 |  |
Employee contribution percentage, maximum | 100.00% |  |
Balance accrued included in other liabilities | $ 2,803 | $ 2,550 |
Annual expense included in salaries and benefits expense | $ 279 | 383 | $ 360
Banking Subsidiary |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Employer Match Percentage of Income | 4.00% |  |
Employer Contributions to and Expenses for the Plan | $ 626 | 541 | 547
Insurance Subsidiary |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Employer Contributions to and Expenses for the Plan | $ 86 | $ 83 | $ 74
Non highly compensated employees | Insurance Subsidiary |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Employer Match Percentage of Income | 6.00% |  |
Highly Compensated Employees | Insurance Subsidiary |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Employer Match Percentage of Income | 3.00% |  |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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