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RETIREMENT PLANS (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($) person | Dec. 31, 2019 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
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 | 347 |
Actuarial gain (loss), mortality assumptions | $ (3,699,000) |
Corporation common stock included in equity securities, percentage of total plan assets | 4.00% | 6.00%
Employee contribution percentage, maximum | 100.00% |
Additional compensation contributed to plan | 50.00% |
Percentage over employees' gross pay | 2.00% |
Balance accrued included in other liabilities | $ 3,491,000 | $ 3,196,000
Annual expense included in salaries and benefits expense | $ 524,000 | 493,000
Banking Subsidiary |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Employer Match Percentage of Income | 3.00% |
Employer Contributions to and Expenses for the Plan | $ 887,000 | 709,000
Insurance Subsidiary |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Employer Contributions to and Expenses for the Plan | $ 126,000 | 123,000
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% |
Corporation common stock |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Fair value of plan assets | $ 1,963,000 | $ 2,854,000

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- Definition Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Mortality Assumptions + References No definition available. + Details
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- Definition Amount of employer security in which defined benefit plan asset is invested. Includes, but is not limited to, security issued or managed by related party of employer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (n) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 + Details
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