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Selected Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2020
Selected Quarterly Financial Information [Abstract]  
Schedule of Selected Quarterly Results from Operations

Selected quarterly results from operations for the years ended December 31, 2020 and 2019 are as follows (in thousands, except per share amounts):

 

 

 

2020 Quarter Ended

 

 

 

March 31,

 

 

June 30,

 

 

September 30,

 

 

December 31,

 

Loss from operations

 

$

(19,022

)

 

$

(21,560

)

 

$

(18,123

)

 

$

(22,776

)

Net loss

 

 

(18,728

)

 

 

(21,418

)

 

 

(18,033

)

 

 

(22,714

)

Basic and diluted net loss per common share

 

$

(0.57

)

 

$

(0.40

)

 

$

(0.29

)

 

$

(0.35

)

 

 

 

2019 Quarter Ended

 

 

 

March 31,

 

 

June 30,

 

 

September 30,

 

 

December 31,

 

Loss from operations

 

$

(17,657

)

 

$

(18,622

)

 

$

(22,146

)

 

$

(21,909

)

Net loss

 

 

(17,167

)

 

 

(18,019

)

 

 

(21,573

)

 

 

(21,495

)

Basic and diluted net loss per common share

 

$

(0.59

)

 

$

(0.55

)

 

$

(0.66

)

 

$

(0.65

)