STOCK BASED COMPENSATION PLANS - Restricted Stock Units (Details) - LTI Plan - Restricted stock units	12 Months Ended
Dec. 31, 2020 $ / shares shares
Shares
Unvested, January 1, 2020 \| shares	85,342
Granted \| shares	26,556
Reinvested dividends \| shares	4,491
Added by performance factor \| shares	605
Forfeited \| shares	(6,623)
Vested \| shares	(72,096)
Unvested, December 31, 2020 \| shares	38,275
Weighted Average Grant-Date Fair Value
Unvested, January 1, 2020 \| $ / shares	$ 29.59
Granted \| $ / shares	32.13
Reinvested dividends \| $ / shares	30.08
Added by performance factor \| $ / shares	33.69
Forfeited \| $ / shares	28.68
Vested \| $ / shares	29.10
Unvested, December 31, 2020 \| $ / shares	$ 32.57

Represents amount added by performance factor.

No definition available.

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- Definition

The weighted average fair value as of performance factor pertaining to an equity-based award plan other than a stock (or unit) option plan.

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No definition available.

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- Definition

Represents amount of reinvested dividend made during the period other than stock (or unit) option plans.

+ References

No definition available.

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The weighted average fair value as of reinvested dividend pertaining to an equity-based award plan other than a stock (or unit) option plan.

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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-Publisher FASB
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-Topic 718
-SubTopic 10
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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 2
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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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