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SHARE-BASED COMPENSATION PLANS - Company's restricted stock award activities (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of Restricted Stock, Non-vested beginning of period	72,490	68,735
Shares of Restricted Stock, Issued	36,325	30,800
Shares of Restricted Stock, Vested	(30,345)	(27,045)
Shares of Restricted Stock, Non-vested end of period	78,470	72,490
Weighted Average Grant Date Fair Value, Non-vested beginning of period (in dollars per share)	$ 23.77	$ 28.04
Weighted Average Grant Date Fair Value, Issued (in dollars per share)	24.00	18.00
Weighted Average Grant Date Fair Value, Vested (in dollars per share)	25.75	28.04
Weighted Average Grant Date Fair Value, Non-vested end of period (in dollars per share)	$ 23.11	23.77
Aggregate Intrinsic Value	$ 1.0
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair market value of options granted (in dollars per share)	$ 4.16	$ 2.01

X

- 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).

+ References

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
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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

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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-Publisher FASB
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- Definition

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

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-Publisher FASB
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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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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