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EMPLOYEE BENEFIT PLANS - Assumptions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net periodic pension cost
Transfer into Level 3, Asset	$ 0	$ 0
Transfer out of Level 3, Asset	0	0
Transfer into level 3, Liability	0	0
Transfer out of level 3, Liability	$ 0	$ 0
Pension Plans
Projected benefit obligation
Discount rate, obligation	2.80%	2.46%
Net periodic pension cost
Discount rate, periodic cost	2.46%	3.23%
Long-term rate of return on plan assets	6.00%	6.00%
Pension Plans | Common stock
Net periodic pension cost
Target asset allocation	20.00%
Pension Plans | Fixed-income securities
Net periodic pension cost
Target asset allocation	80.00%
Non-qualified Supplemental Executive Retirement Plan
Projected benefit obligation
Discount rate, obligation	2.12%	1.56%	2.65%

X

- 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

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

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-SubTopic 20
-Section 50
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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

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-Publisher FASB
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Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset) out of level 3 of the fair value hierarchy.

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