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Net Income (Loss) Per Share (Tables)
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Calculations of Net Loss Per Share
The calculations of net loss per share were as follows:
   
Three months ended September 30,
 
Nine months ended September 30,
   
2016
 
2015
 
2016
 
2015
 
(Unaudited - In thousands, except per share data)
Basic:
   
 
   
 
   
 
   
Net loss
$
(24,085
)
 
$
(11,628
)
 
$
(561
)
 
$
(45,253
)
Weighted average common shares outstanding
20,387

 
20,919

 
20,390

 
20,892

Net loss per share
$
(1.18
)
 
$
(0.56
)
 
$
(0.03
)
 
$
(2.17
)
 
 
 
 
 
 
 
 
Diluted:
 
 
 
 
 
 
 
Net loss
$
(24,085
)
 
$
(11,628
)
 
$
(561
)
 
$
(45,253
)
Weighted average common shares outstanding
20,387

 
20,919

 
20,390

 
20,892

Net loss per share
$
(1.18
)
 
$
(0.56
)
 
$
(0.03
)
 
$
(2.17
)