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Earnings Per Share (Notes)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share

Earnings (loss) per share has been computed according to FASB ASC 260, “Earnings per Share”, which requires a dual presentation of basic and diluted EPS. Basic EPS represents net income or loss divided by the weighted average number of common shares outstanding during a reporting period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock, including stock options and restricted stock units under our 2001 Stock Incentive Plan and 2006 Incentive Plan were exercised or converted into common stock. The dilutive effect of outstanding, stock options and restricted stock units is reflected in diluted earnings per share by application of the treasury stock method. In applying the treasury stock method for stock-based compensation arrangements, the assumed proceeds are computed as the sum of the amount the employee must pay upon exercise and the amounts of average unrecognized compensation cost attributed to future services.
The following table sets forth the computation for basic and diluted earnings (loss) per share:
 
For the years ended December 31,
 
2019
 
2018
 
2017
 
 
 
 
 
 
Numerator
 
 
 
 
 
Net (loss) income
$
(19,482
)
 
$
35,728

 
$
(33,933
)
 
 
 
 
 
 
Denominator
 
 
 
 
 
Basic weighted average common shares outstanding
242,018

 
237,499

 
225,311

Dilutive effect of stock options and restricted stock units
—

 
11,393

 
—

Diluted weighted average common shares outstanding
242,018

 
248,892

 
225,311

Basic (loss) earnings per share
 
 
 
 
 
Basic (loss) earnings per share
$
(0.08
)
 
$
0.15

 
$
(0.15
)
Diluted (loss) earnings per share
 
 
 
 
 
Diluted (loss) earnings (loss) per share
$
(0.08
)
 
$
0.14

 
$
(0.15
)



The following shares were excluded from the calculation of diluted earnings (loss) per share because of their anti-dilutive effects:
  
For the years ended December 31,
 
  
2019

 
2018

 
2017

Restricted stock units
10,389

 
3,285

 
11,928

Employee stock options
4,946

 
1,163

 
10,448

 
15,335

 
4,448

 
22,376



As the Company expects to settle the principal amount of its outstanding convertible senior notes in cash and any excess in cash or shares of the Company’s common stock, the Company uses the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. The conversion spread will have a dilutive impact on diluted net income per share of common stock when the average market price of the Company’s common stock for a given period exceeds the conversion price of  $16.72  per share. The Company's convertible senior notes are further described in Note 8, Long-Term Debt .