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STATEMENTS OF STOCKHOLDERS EQUITY - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Total
Balance at the beginning at Dec. 31, 2020 $ 28 $ 410,551 $ 779 $ (117,637) $ 293,721
Balance at the beginning (in shares) at Dec. 31, 2020 27,568,802        
Increase (Decrease) in Stockholders' Deficit          
Stock based compensation   10,288     10,288
Exercise of stock options   208     208
Exercise of stock options (in shares) 112,195        
Unrealized gain (loss) on marketable securities, net of tax $0     (1,442)   (1,442)
Net loss       (69,389) (69,389)
Balance at the end at Dec. 31, 2021 $ 28 421,047 (663) (187,026) $ 233,386
Balance at the end (in shares) at Dec. 31, 2021 27,680,997       27,680,997
Increase (Decrease) in Stockholders' Deficit          
Stock based compensation   9,508     $ 9,508
Exercise of stock options   66     66
Exercise of stock options (in shares) 50,420        
Issuance of shares under ESPP   134     134
Issuance of shares under ESPP (in shares) 43,119        
Unrealized gain (loss) on marketable securities, net of tax $0     (831)   (831)
Net loss       (74,733) (74,733)
Balance at the end at Dec. 31, 2022 $ 28 $ 430,755 $ (1,494) $ (261,759) $ 167,530
Balance at the end (in shares) at Dec. 31, 2022 27,774,536       27,774,536