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Net Loss Per Share (Tables)
12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Summary of Anti-dilutive Shares
The following table presents common shares related to potentially dilutive shares excluded from the calculation of diluted net income (loss) per share as their effect would have been anti-dilutive (in thousands):
 Years Ended December 31,
 202020192018
Stock options, RSUs, PSUs and employee stock purchase rights822 9,199 9,621