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Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common stock
Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit
Beginning Balance, Stockholders' equity at Dec. 31, 2019 $ 106,548 $ 21 $ 139,700 $ (3,939) $ (29,234)
Beginning Balances, Stockholders' equity (in shares) at Dec. 31, 2019   21,419      
Exercise of stock awards and employee stock plan purchases 709   709    
Exercise of stock awards and employee stock plan purchases (in shares)   94      
Stock-based compensation 782   782    
Net income (loss) (8,771)       (8,771)
Other comprehensive loss (1,979)     (1,979)  
Ending Balances, Stockholders' equity at Mar. 31, 2020 97,289 $ 21 141,191 (5,918) (38,005)
Ending Balances, Stockholders' equity (in shares) at Mar. 31, 2020   21,513      
Beginning Balance, Stockholders' equity at Dec. 31, 2020 $ 93,579 $ 22 147,997 (2,124) (52,316)
Beginning Balances, Stockholders' equity (in shares) at Dec. 31, 2020 21,958 21,958      
Issuance of common stock in public offering, net of issuance costs $ 59,525 $ 5 59,520    
Issuance of common stock in public offering, net of issuance costs (in shares)   4,600      
Exercise of stock awards and employee stock plan purchases 2,569   2,569    
Exercise of stock awards and employee stock plan purchases (in shares)   325      
Stock-based compensation 1,352   1,352    
Net income (loss) (23,225)       (23,225)
Other comprehensive loss (2,298)     (2,298)  
Ending Balances, Stockholders' equity at Mar. 31, 2021 $ 131,502 $ 27 $ 211,438 $ (4,422) $ (75,541)
Ending Balances, Stockholders' equity (in shares) at Mar. 31, 2021 26,883 26,883