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NET INCOME PER SHARE (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Weighted-average number of basic common shares outstanding (in shares)	41,068,000	40,935,000	41,032,000	40,983,000
Weighted-average dilutive stock options, restricted stock units and performance share units (in shares)	178,000	146,000	202,000	142,000
Assumed conversion of convertible senior notes (in shares)	96,000	0	125,000	17,000
Weighted-average number of diluted common and common equivalent shares outstanding (in shares)	41,342,000	41,081,000	41,359,000	41,142,000
Anti-dilutive potential common shares (in shares)		163,507	15,434	165,923

X

- 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
-SubTopic 10
-Section 50
-Paragraph 1
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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

+ References

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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.

+ References

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

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