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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items] |  |  |
Amortization of actuarial loss | $ 333,000 | $ 0 |
Total 401(k) expense | 1,000,000 | 970,000 | $ 439,000
Split-dollar life insurance agreement |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accrued liability | 671,000 | 687,000 |
Salary continuation agreement expense | 57,000 | (9,000) |
Certain prior executives and senior officers | Salary continuation agreement |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accrued liability | 7,300,000 | 8,100,000 |
Salary continuation agreement expense | 752,000 | 581,000 |
Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost | 573,000 |  |
Expected cash contributions | 0 |  |
Expected amortization from accumulated other comprehensive loss into net periodic pension cost | $ 0 |  |
Pension Plans | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target asset allocation | 48.00% |  |
Pension Plans | Fixed-income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target asset allocation | 52.00% |  |
Non-qualified Supplemental Executive Retirement Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Amortization of actuarial loss | $ (142,000) | 16,000 |
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost | 317,000 |  |
Expected amortization from accumulated other comprehensive loss into net periodic pension cost | 15,000 |  |
Actuarial loss (gain) | $ (585,000) | $ (590,000) |

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- Definition Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 + Details
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- Definition Amount of gain (loss), recognized immediately as component of net periodic benefit (cost) credit, for change in value of benefit obligation or plan assets from experience different from that assumed, change in actuarial assumption, or consequence of temporarily deviating from substantive plan. Includes, but is not limited to, amount in excess of ten percent of greater of fair value of plan assets or benefit obligation. + 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 (h)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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