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EARNINGS (LOSS) PER COMMON SHARE - Additional Information (Details) - shares	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stock Appreciation Rights
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock issued upon exercise of SARs (in shares)		305,772
Dilutive effects of restricted shares/units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock excluded from computation of earnings per share (in shares)	206,035		643,901	194,615	938,526
Dilutive effects of stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock excluded from computation of earnings per share (in shares)	0		55,069	0	55,314

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
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+ References

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

+ References

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