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Net Loss Per Share
 3 Months Ended
Mar. 31, 2020
Earnings Per Share [Abstract]  
Net Loss Per Share
Net Loss Per Share
The table below provides a reconciliation of the numerators and denominators of basic and diluted net loss per share for the three months ended March 31, 2020 and 2019 (in thousands, except per share amounts):
 
Three Months Ended
March 31,
 
2020
 
2019
Numerators:
 
 
 
Net loss
$
(405,041
)
 
$
(14,648
)
Less: Income attributable to unvested restricted stock awards
—

 
—

Numerator for basic net loss per share
(405,041
)
 
(14,648
)
Effect of dilutive securities:
 
 
 
Unvested restricted stock awards
—

 
—

Numerator for diluted net loss per share
$
(405,041
)
 
$
(14,648
)
 
 
 
 
Denominators:
 
 
 
Weighted average number of common shares outstanding
60,770

 
60,249

Less: Weighted average number of unvested restricted stock awards outstanding
(1,116
)
 
(991
)
Denominator for basic and diluted net loss per share
59,654

 
59,258

 
 
 
 
Net loss per share:
 
 
 
Basic
$
(6.79
)
 
$
(0.25
)
Diluted
(6.79
)
 
(0.25
)

The calculation of diluted net loss per share for the three months ended March 31, 2020 and 2019 excluded 629 thousand shares and 687 thousand shares, respectively, issuable pursuant to outstanding stock options, due to their antidilutive effect. Additionally, shares issuable upon conversion of the 1.50% convertible senior notes were not convertible and therefore excluded for the three months ended March 31, 2020 and 2019, due to their antidilutive effect.