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Net Loss Attributable to Common Shareholders
 6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Net Loss Attributable to Common Shareholders Net Loss Attributable to Common Shareholders
Net loss attributable to common stockholders is computed by deducting both the dividend distributions declared in the period on preferred stock and the dividends accumulated for the period on cumulative preferred stock from net income (“Basic EPS”). Diluted net loss per share (“Diluted EPS”) is computed by dividing net loss attributable to common stockholders by the total of the weighted-average common stock outstanding shares outstanding during the period.
Diluted EPS for the three and six months ended June 30, 2021 and 2020, respectively exclude the dilutive effect of stock option shares because their inclusion would be anti-dilutive for both periods.
The following table sets forth the calculation of both basic and diluted net loss per share as follows for the periods indicated (in thousands, except share and per share amounts):
Three Months EndedSix Months Ended
(in thousands, except share and per share amounts)June 30, 2021June 30, 2020June 30, 2021June 30, 2020
Basic and Diluted loss per share:
Net loss
$(139,378)$(10,397)$(142,652)$(19,466)
Shares used in computation:
Weighted-average common shares outstanding
91,798,837 34,482,179 63,805,807 33,309,191 
Basic and diluted loss per share:$(1.52)$(0.30)$(2.24)$(0.58)

The following potentially dilutive weighted average shares were not included in the calculation of the weighted average diluted shares outstanding as the effect would have been anti-dilutive for the periods indicated:
Three Months EndedSix Months Ended
June 30, 2021June 30, 2020June 30, 2021June 30, 2020
Stock Options4,796,062 — 2,411,280 — 
PSUs129,231 — 64,972 — 
Public and Private Warrants15,450,549 — 7,767,956 —