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COMMON STOCK AND EARNINGS PER SHARE (Tables)
9 Months Ended
Sep. 30, 2013
COMMON STOCK AND EARNINGS PER SHARE  
Reconciliation of number of shares used in the calculation of basic and diluted earnings (loss) per common share including unvested restrictive shares
 
Three months ended
 
Nine months ended
 
September 30,
 
September 30,
 
September 30,
 
September 30,
 
2013
 
2012
 
2013
 
2012
 
(in thousands)
Weighted-average number of common shares outstanding - basic
46,916

 
46,667

 
46,882

 
46,595

Potentially dilutive shares resulting from stock plans
763

 
372

 
733

 
456

Weighted-average number of common shares outstanding - diluted
47,679

 
47,039

 
47,615

 
47,051

Antidilutive equity awards number not included in the weighted-average common shares - diluted
164

 
606

 
164

 
438