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Condensed Consolidated Statements of Stockholders’ Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Deficit [Member]
Total
Balance at Dec. 31, 2020 $ 192 $ 1,372,083 $ 85 $ (1,036,869) $ 335,491
Balance, shares at Dec. 31, 2020 192,294        
Net loss       (87,435) (87,435)
Other comprehensive income loss     (11)   (11)
Issuance of common stock in conjunction with equity plans $ 6 22,337     22,343
Issuance of common stock in conjunction with equity plans, shares 6,046        
Stock-based compensation expense   10,165     10,165
Balance at Mar. 31, 2021 $ 198 1,404,585 74 (1,124,304) 280,553
Balance, shares at Mar. 31, 2021 198,340        
Balance at Dec. 31, 2021 $ 221 2,009,945 (1,087) (1,218,092) $ 790,987
Balance, shares at Dec. 31, 2021 220,978       220,978
Net loss       (81,499) $ (81,499)
Other comprehensive income loss     (2,998)   (2,998)
Issuance of common stock in conjunction with equity plans $ 3 5,589     5,592
Issuance of common stock in conjunction with equity plans, shares 3,351        
Stock-based compensation expense   22,496     22,496
Balance at Mar. 31, 2022 $ 224 $ 2,038,030 $ (4,085) $ (1,299,591) $ 734,578
Balance, shares at Mar. 31, 2022 224,329       224,329