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EMPLOYEE BENEFIT PLANS - Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial (gain) loss | $ (1,132) | $ 338 | $ 350
Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial (gain) loss | (953) | 178 |
Settlement charge | 0 | 0 |
Prior service cost (credit) | 1,072 | 893 |
Total recognized in net periodic benefit cost and other comprehensive loss | 119 | 1,071 |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost | 91 |  |
Expected cash contributions | 0 |  |
Expected amortization from accumulated other comprehensive loss into net periodic pension cost | 0 |  |
Non-qualified Supplemental Executive Retirement Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial (gain) loss | (137) | 202 |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Accumulated other comprehensive loss at beginning of the year (pre-tax) | 779 | 619 |
Actuarial loss | (137) | 202 |
Amortization of actuarial loss | (43) | (42) |
Accumulated other comprehensive loss at end of year (pre-tax) | 599 | $ 779 | $ 619
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost | 461 |  |
Expected amortization from accumulated other comprehensive loss into net periodic pension cost | $ 37 |  |

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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=123447040&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=123447040&loc=d3e2709-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919 + Details
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