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Earnings Per Share and Capital Structure (Text Block)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
Earnings (Loss) Per Share

The following table sets forth the computation of basic and diluted earnings (loss) per share (EPS):

 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(in thousands, except per share data)
Net income (loss) available to common shareholders
$
12,678

 
$
(23,670
)
 
$
(153,153
)
 
 
 
 
 
 
Weighted average common shares outstanding - Basic
38,224

 
39,184

 
39,281

Dilutive effect of stock-based awards
282

 
—

 
—

Weighted average common shares outstanding - Diluted
38,506

 
39,184

 
39,281

Earnings (loss) per common share - Basic
$
0.33

 
$
(0.60
)
 
$
(3.90
)
Earnings (loss) per common share - Diluted
$
0.33

 
$
(0.60
)
 
$
(3.90
)


Stock-based Awards
For stock-based awards, the dilutive effect is calculated using the treasury stock method. Under this method, the dilutive effect is computed as if the awards were exercised at the beginning of the period (or at time of issuance, if later) and assumes the related proceeds were used to repurchase common stock at the average market price during the period. Related proceeds include the amount the employee must pay upon exercise, future compensation cost associated with the stock award, and the amount of excess tax benefits, if any. As a result of our net losses for 2014 and 2013, there was no dilutive effect to the weighted average common shares outstanding for these years. Approximately 1.2 million, 1.4 million, and 1.4 million stock-based awards were excluded from the calculation of diluted EPS for the years ended December 31, 2015, 2014, and 2013, respectively, because they were anti-dilutive. These stock-based awards could be dilutive in future periods.