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Earnings per Share (Table)
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2016 and 2015:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(in thousands, except per share data)
2016
 
2015
 
2016
 
2015
Numerator:
 
 
 
 
 
 
 
Net loss
$
(15,708
)
 
$
(18,182
)
 
$
(56,712
)
 
$
(48,080
)
Denominator:
 
 
 
 
 
 
 
Weighted average shares (basic)
30,469

 
29,649

 
30,341

 
29,530

Dilutive effect of potential common shares
—

 
—

 
—

 
—

Weighted average shares (diluted)
30,469

 
29,649

 
30,341

 
29,530

Basic loss per share
$
(0.52
)
 
$
(0.61
)
 
$
(1.87
)
 
$
(1.63
)
Diluted loss per share
$
(0.52
)
 
$
(0.61
)
 
$
(1.87
)
 
$
(1.63
)