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Net Income (Loss) Per Share (Details) - shares
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Earnings Per Share [Abstract]        
Exercise of outstanding stock options 588,407 773,375 618,918 1,021,243
Shares included in the computation of diluted net income (loss) per share     3,118