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EARNINGS PER SHARE Additional Information (Details)	3 Months Ended		9 Months Ended
EARNINGS PER SHARE Additional Information (Details)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share, Basic and Diluted [Abstract]
Outstanding stock options and ESPP shares	1,746,100	2,344,578	1,746,100	2,344,578
Anti-dilutive stock options and ESPP shares	305,634	565,956	305,634	565,956

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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