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EMPLOYEE STOCK COMPENSATION - Nonvested Restricted Stock Awards and Restricted Stock Units (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted stock awards and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	848,302	923,482	833,601
Granted (in shares)	297,592	358,593	796,547
Vested (in shares)	(388,387)	(331,998)	(273,904)
Forfeited (in shares)	(108,497)	(101,775)	(432,762)
Outstanding at end of year (in shares)	649,010	848,302	923,482
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding at beginning of year (in dollars per share)	$ 14.42	$ 15.74	$ 18.96
Granted (in dollars per share)	19.88	13.85	14.40
Vested (in dollars per share)	14.01	15.83	18.37
Forfeited (in dollars per share)	14.40	15.43	17.93
Outstanding at end of year (in dollars per share)	$ 17.17	$ 14.42	$ 15.74
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares)	66,472	78,771	174,935
Vested (in shares)	(77,327)	(18,473)	(37,572)
Forfeited (in shares)	(48,803)	(24,242)	(233,999)

X

- Definition

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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