NET INCOME PER SHARE (Details) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Anti-dilutive Securities Excluded From Computation Of Earnings Per Share
Weighted average number of basic common shares outstanding	52,405	51,363	52,319	50,690
Weighted average dilutive stock options, restricted stock units and performance share units	272	338	308	359
Assumed conversion of convertible debt (in shares)	347	1,283	421	1,177
Weighted average number of diluted common and common equivalent shares outstanding (in shares)	53,024	52,984	53,048	52,226
Unvested Stock Awards Outstanding and Convertible Debt Securities [Member]
Anti-dilutive Securities Excluded From Computation Of Earnings Per Share
Anti-dilutive potential common shares	2,628	2,923	2,577	2,931
Convertible Debt [Member]
Anti-dilutive Securities Excluded From Computation Of Earnings Per Share
Anti-dilutive potential common shares			2,100

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

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-Section 50

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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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.

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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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