Quarterly report pursuant to Section 13 or 15(d)

Condensed Statements of Stockholders' Equity (Unaudited)

v3.20.2
Condensed Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Balances at Dec. 31, 2018 $ 131,539 $ 23 $ 281,891 $ (47) $ (150,328)
Common Stock Balance, Shares at Dec. 31, 2018   22,848,184      
Adoption of Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606) 10,327       10,327
Exercise of common stock options 42   42    
Exercise of common stock options, Shares   8,347      
Issuance of common stock under Employee Stock Purchase Plan 671   671    
Issuance of common stock under Employee Stock Purchase Plan, Shares   68,910      
Stock-based compensation expense 2,286   2,286    
Net unrealized gain (loss) on available-for- sale securities 103     103  
Net income (loss) (14,250)       (14,250)
Balances at Mar. 31, 2019 130,718 $ 23 284,890 56 (154,251)
Common Stock Balance, Shares at Mar. 31, 2019   22,925,441      
Balances at Dec. 31, 2018 131,539 $ 23 281,891 (47) (150,328)
Common Stock Balance, Shares at Dec. 31, 2018   22,848,184      
Net unrealized gain (loss) on available-for- sale securities 260        
Net income (loss) (28,043)        
Balances at Jun. 30, 2019 119,555 $ 23 287,363 213 (168,044)
Common Stock Balance, Shares at Jun. 30, 2019   22,927,203      
Balances at Dec. 31, 2018 $ 131,539 $ 23 281,891 (47) (150,328)
Common Stock Balance, Shares at Dec. 31, 2018   22,848,184      
Exercise of common stock options, Shares 191,165        
Balances at Dec. 31, 2019 $ 97,789 $ 23 293,346 165 (195,745)
Common Stock Balance, Shares at Dec. 31, 2019   23,098,969      
Balances at Mar. 31, 2019 130,718 $ 23 284,890 56 (154,251)
Common Stock Balance, Shares at Mar. 31, 2019   22,925,441      
Exercise of common stock options 10   10    
Exercise of common stock options, Shares   1,762      
Stock-based compensation expense 2,463   2,463    
Net unrealized gain (loss) on available-for- sale securities 157     157  
Net income (loss) (13,793)       (13,793)
Balances at Jun. 30, 2019 119,555 $ 23 287,363 213 (168,044)
Common Stock Balance, Shares at Jun. 30, 2019   22,927,203      
Balances at Dec. 31, 2019 97,789 $ 23 293,346 165 (195,745)
Common Stock Balance, Shares at Dec. 31, 2019   23,098,969      
Exercise of common stock options 56   56    
Exercise of common stock options, Shares   12,937      
Issuance of common stock under Employee Stock Purchase Plan 646   646    
Issuance of common stock under Employee Stock Purchase Plan, Shares   74,465      
Vesting of restricted stock units   41,050      
Stock-based compensation expense 2,707   2,707    
Issuance of common stock warrants in connection with debt refinancing 619   619    
Net unrealized gain (loss) on available-for- sale securities (137)     (137)  
Net income (loss) (19,595)       (19,595)
Balances at Mar. 31, 2020 82,085 $ 23 297,374 28 (215,340)
Common Stock Balance, Shares at Mar. 31, 2020   23,227,421      
Balances at Dec. 31, 2019 $ 97,789 $ 23 293,346 165 (195,745)
Common Stock Balance, Shares at Dec. 31, 2019   23,098,969      
Exercise of common stock options, Shares 191,165        
Net unrealized gain (loss) on available-for- sale securities $ 233        
Net income (loss) 10,277        
Balances at Jun. 30, 2020 206,757 $ 36 391,791 398 (185,468)
Common Stock Balance, Shares at Jun. 30, 2020   35,878,928      
Balances at Mar. 31, 2020 82,085 $ 23 297,374 28 (215,340)
Common Stock Balance, Shares at Mar. 31, 2020   23,227,421      
Exercise of common stock options 8   8    
Exercise of common stock options, Shares   1,257      
Vesting of restricted stock units   250      
Stock-based compensation expense 3,011   3,011    
Issuance of common stock in connection with public offering, net of issuance costs 91,411 $ 13 91,398    
Issuance of common stock in connection with public offering, net of issuance costs, Shares   12,650,000      
Net unrealized gain (loss) on available-for- sale securities 370     370  
Net income (loss) 29,872       29,872
Balances at Jun. 30, 2020 $ 206,757 $ 36 $ 391,791 $ 398 $ (185,468)
Common Stock Balance, Shares at Jun. 30, 2020   35,878,928