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SIGNIFICANT ACCOUNTING POLICIES (Tables)
9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]  
Schedule of Weighted Average Number of Shares
 
Three months ended September 30
 
Nine months ended September 30
 
2017
 
2016
 
2017
 
2016
Weighted average shares outstanding - basic
37,345,985

 
37,323,575

 
36,994,969

 
36,928,283

Effect of dilutive employee and director share-based awards
29,288

 
61,906

 
27,378

 

Weighted average shares outstanding - diluted
37,375,273

 
37,385,481

 
37,022,347

 
36,928,283

Anti-dilutive stock options outstanding
358,741

 
435,991

 
351,074

 
435,991

Participating securities excluded from calculation of loss per share 

 

 
332,134

 
365,432