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Unaudited Condensed Consolidated Statements of Stockholders’ Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Accumulated Other Comprehensive (Loss) Income
Beginning balance, shares at Dec. 31, 2021   198,084,000      
Beginning balance at Dec. 31, 2021 $ 197,551 $ 198 $ 947,160 $ (748,012) $ (1,795)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock upon exercise of stock options (in shares)   202,000      
Issuance of common stock upon exercise of stock options 225   225    
Issuance of common stock upon vesting of restricted stock awards and ESPP (in shares)   392,000      
Stock-based compensation 22,346   22,346    
Repurchased common stock (in shares)   (79,000)      
Repurchased common stock (1,102)     (1,102)  
Other comprehensive income 1,440       1,440
Net loss (25,753)     (25,753)  
Ending balance, shares at Mar. 31, 2022   198,599,000      
Ending balance at Mar. 31, 2022 194,707 $ 198 969,731 (774,867) (355)
Beginning balance, shares at Dec. 31, 2022   190,822,000      
Beginning balance at Dec. 31, 2022 142,375 $ 190 1,032,550 (891,862) 1,497
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock upon exercise of stock options (in shares)   28,000      
Issuance of common stock upon exercise of stock options 22   22    
Issuance of common stock upon vesting of restricted stock awards and ESPP (in shares)   1,164,000      
Issuance of common stock upon vesting of restricted stock awards 0 $ 1 (1)    
Stock-based compensation $ 17,378   17,378    
Repurchased common stock (in shares) (770,717) (771,000)      
Repurchased common stock $ (6,768) $ (1)   (6,767)  
Other comprehensive income (631)       (631)
Net loss (2,358)     (2,358)  
Ending balance, shares at Mar. 31, 2023   191,244,000      
Ending balance at Mar. 31, 2023 $ 150,017 $ 190 $ 1,049,948 $ (900,987) $ 866