STOCK-BASED COMPENSATION AND EQUITY - Summary of Restricted Stock Activity (Details) - Restricted Stock - $ / shares	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Shares
Stock outstanding at beginning of period, shares	314,883	412,967
Granted, shares	144,064	134,314
Vested, shares	(174,943)	(245,455)
Forfeited, shares	0	(6,329)
Stock outstanding at end of period, shares	284,004	295,497
Weighted-Average Grant Date Fair Value Per Share
Nonvested stock outstanding at beginning of period, Weighted-Average Grant-Date Fair Value (in dollars per share)	$ 29.79	$ 28.87
Granted, Weighted-Average Grant-Date Fair Value (in dollars per share)	34.44	31.26
Vested, Weighted-Average Grant-Date Fair Value (in dollars per share)	29.75	29.16
Forfeited or unearned, Weighted-Average Grant-Date Fair Value (in dollars per share)	0	29.10
Nonvested stock outstanding at end of period, Weighted-Average Grant-Date Fair Value (in dollars per share)	$ 32.17	$ 29.71
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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

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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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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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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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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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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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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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