Quarterly report pursuant to Section 13 or 15(d)

Condensed Statements of Stockholders' Equity (Unaudited)

v3.20.1
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    
Unrealized (loss)/gain on available-for-sale securities 103     103  
Net 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, 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    
Unrealized (loss)/gain on available-for-sale securities (137)     (137)  
Net 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