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NET INCOME PER SHARE (Tables)
 12 Months Ended
Dec. 31, 2014
NET INCOME PER SHARE [Abstract]  
Schedule of calculation of numerator and denominator in earnings per share
A summary of the numerator and denominator of the basic and fully diluted 2014, 2013 and 2012 net income (loss) per share is presented below.

  
Income
(Numerator)
  
Shares Outstanding
(Denominator)
  
Per-share
Amount
 
  
(Dollars in Thousands)
 
For the year ended December 31, 2014
      
Basic net income per share
 
$
37,199
   
12,082
  
$
3.08
 
Fully diluted income per share
 
$
37,199
   
12,438
  
$
2.99
 
             
For the year ended December 31, 2013
            
Basic net income per share
 
$
12,727
   
8,506
  
$
1.50
 
Fully diluted income per share
 
$
12,727
   
8,772
  
$
1.45
 
             
For the year ended December 31, 2012
            
Basic net income per share
 
$
4,313
   
7,952
  
$
0.53
 
Fully diluted income per share
 
$
4,313
   
8,016
  
$
0.53