EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Oct. 03, 2020	Sep. 28, 2019	Oct. 03, 2020	Sep. 28, 2019
Numerator for Basic and Diluted Earnings Per Common Share
Net income (loss) applicable to common shares	$ 30,028	$ 24,790	$ (484,658)	$ (17,320)
Denominator for Basic and Diluted Earnings Per Common Share
Weighted average basic number of common shares outstanding (in shares)	125,100	125,557	125,655	125,526
Weighted average diluted number of common shares outstanding (in shares)	125,289	125,558	125,655	125,526
Basic income (loss) per common share (in USD per share)	$ 0.24	$ 0.20	$ (3.86)	$ (0.14)
Diluted income (loss) per common share (in USD per share)	$ 0.24	$ 0.20	$ (3.86)	$ (0.14)
Incentive Plan securities excluded from dilution (in shares)	2,146	5,189	3,338	4,974
Employee stock options
Denominator for Basic and Diluted Earnings Per Common Share
Common stock equivalents (in shares)	189	1	0	0
PSUs and Performance Share Awards
Denominator for Basic and Diluted Earnings Per Common Share
Common stock equivalents (in shares)	0	0	0	0

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.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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