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Earnings (Loss) Per Share
 12 Months Ended
Dec. 31, 2016
Earnings (Loss) Per Share [Abstract]  
Earnings Per Share [Text Block]
Earnings (Loss) Per Share:
Basic earnings (loss) per share is calculated using the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed in the same manner and also gives effect to all dilutive common equivalent shares outstanding during the period. Potential common shares that would have the effect of increasing diluted earnings per share are considered to be antidilutive. In accordance with U.S. GAAP, these shares were not included in calculating diluted earnings per share.
For the year ended December 31, 2016, the weighted average number of stock options and restricted stock units excluded from the computation of diluted earnings per share were 39 and 0, respectively. For the year ended December 31, 2015, the weighted average number of stock options and restricted stock units excluded from the computation of diluted earnings per share were 15 and 190, respectively. For the year ended December 31, 2014, all outstanding restricted stock units of 805 and stock options of 615 were excluded from the computation of diluted loss per shares because the effect in the period would be antidilutive.
For the years ended December 31, 2016 and 2015, diluted earnings per share-weighted average shares outstanding included the effect resulting from assumed conversion of the Notes and warrants. For the year ended December 31, 2014, diluted earnings per share-weighted average shares outstanding do not include any effect resulting from assumed conversion of the Notes as their impact would be anti-dilutive. See Note 7 for additional discussion regarding the Notes.
The computations of basic and diluted income per share for the years ended December 31, 2016, 2015, and 2014 are as follows:

December 31,

2016

2015

2014
Numerator:








Net income (loss)
$
36,952


$
17,956


$
(4,640
)
Denominator:








Basic earnings per share - weighted average shares outstanding
31,128


31,408


33,124

Effect of potential diluted securities:








Employee stock options and restricted stock units - dilutive shares
467


692


—

Convertible senior notes - dilutive shares
103

 
66

 
—

Warrants - dilutive shares
92

 
—

 
—

Diluted earnings per share - weighted average shares outstanding
31,790


32,166


33,124

Earnings per share:








Basic
$
1.19


$
0.57


$
(0.14
)
Diluted
$
1.16


$
0.56


$
(0.14
)