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PENSION PLAN - Narrative (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) installment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | May 31, 2014
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service period | 3 years |  |  |
Pension expense | $ 300,000 | $ 300,000 | $ 300,000 |
Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Discount rate | 2.83% | 2.50% | 3.24% | 4.46%
Benefit obligation | $ 12,230,000 | $ 12,715,000 | $ 11,435,000 |
Supplemental Employee Retirement Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Discount rate | 4.00% |  |  |
Benefit obligation | $ 1,800,000 |  |  |
Number of equal consecutive installments | installment | 180 |  |  |
Consecutive installments, amount | $ 10,000 |  |  |
Accrued liability | 1,300,000 | 1,200,000 |  |
Service cost | $ 48,800 | $ 200,000 |  |

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- Definition Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + 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 (k)(1) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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