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Earnings per Share (Table)
 6 Months Ended
Jun. 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 six months ended June 30, 2016 and 2015:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(in thousands, except per share data)
2016
 
2015
 
2016
 
2015
Numerator:
 
 
 
 
 
 
 
Net loss
$
(20,527
)
 
$
(15,668
)
 
$
(41,004
)
 
$
(29,898
)
Denominator:
 
 
 
 
 
 
 
Weighted average shares (basic)
30,330

 
29,565

 
30,278

 
29,470

Dilutive effect of potential common shares
—

 
—

 
—

 
—

Weighted average shares (diluted)
30,330

 
29,565

 
30,278

 
29,470

Basic loss per share
$
(0.68
)
 
$
(0.53
)
 
$
(1.35
)
 
$
(1.01
)
Diluted loss per share
$
(0.68
)
 
$
(0.53
)
 
$
(1.35
)
 
$
(1.01
)