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Loss Per Share (Tables)
12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Net Loss Per Share

Basic and diluted loss per share was calculated as follows:

 

 

Year Ended December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

 

 

(In thousands)

 

Net loss

 

$

(267,892

)

 

$

(134,231

)

 

$

(99,533

)

Weighted average shares outstanding, basic
   and diluted

 

 

70,894

 

 

 

55,987

 

 

 

47,247

 

Net loss per share, basic and diluted

 

$

(3.78

)

 

$

(2.40

)

 

$

(2.11

)

Potential Dilutive Securities Excluded from Computation of Diluted Net Loss Per Common Share

The following common stock equivalents were excluded from the calculation of diluted loss per share in 2021, 2020 and 2019 because their inclusion would have been anti-dilutive:

 

 

 

Year Ended December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

 

 

(In thousands)

 

Unvested restricted stock

 

 

453

 

 

 

194

 

 

 

72

 

Stock options

 

 

6,305

 

 

 

6,977

 

 

 

5,366

 

 

 

 

6,758

 

 

 

7,171

 

 

 

5,438