STOCK-BASED COMPENSATION - Summary of the Activity of Restricted Stock Units for Employees and Non-Employee Directors (Details) - Restricted Stock Units	12 Months Ended
Dec. 31, 2021 $ / shares shares
Shares
Unvested, beginning of period (in shares) \| shares	305,959
Granted (in shares) \| shares	142,149
Vested (in shares) \| shares	(118,675)
Forfeited (in shares) \| shares	(47,509)
Unvested, end of period (in shares) \| shares	281,924
Weighted-average Grant-date Fair Value
Unvested, beginning of period (in dollars per share) \| $ / shares	$ 1,697
Granted (in dollars per share) \| $ / shares	2,282
Vested (in dollars per share) \| $ / shares	1,801
Forfeited (in dollars per share) \| $ / shares	1,902
Unvested, end of period (in dollars per share) \| $ / shares	$ 1,914
Minimum
Weighted-average Grant-date Fair Value
Vesting period	1 year
Maximum
Weighted-average Grant-date Fair Value
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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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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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 number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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