Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity

v3.20.1
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Beginning balance at Dec. 31, 2017 $ 21,410 $ 29 $ 226,631 $ (205,250)
Beginning balance (in shares) at Dec. 31, 2017   28,971,651    
Net loss (12,468)     (12,468)
Stock-based compensation expense 1,816   1,816  
Common stock issued through employee stock purchase plan 39   39  
Common stock issued through employee stock purchase plan (in shares)   31,361    
Common stock issued, net of expenses 20,437 $ 19 20,418  
Common stock issued, net of expenses (in shares)   18,959,675    
Common stock issued for vested restricted stock units (9)   (9)  
Common stock issued for vested restricted stock units (in shares)   9,302    
Ending balance at Dec. 31, 2018 $ 31,225 $ 48 248,895 (217,718)
Ending balance (in shares) at Dec. 31, 2018 47,971,989 47,971,989    
Net loss $ (53,710)     (53,710)
Stock-based compensation expense 1,828   1,828  
Common stock issued through employee stock purchase plan 37   37  
Common stock issued through employee stock purchase plan (in shares)   36,847    
Common stock issued, net of expenses 30,530 $ 47 30,483  
Common stock issued, net of expenses (in shares)   47,736,920    
Common stock issued for April 2019 conversion of Notes 2,984 $ 2 2,982  
Common stock issued for April 2019 conversion of Notes (in shares)   1,626,000    
Common stock issued for exercise of stock options $ 12   12  
Common stock issued for exercise of stock options (in shares) 22,500 22,500    
Common stock issued for vested restricted stock units $ (11)   (11)  
Common stock issued for vested restricted stock units (in shares)   19,465    
Ending balance at Dec. 31, 2019 $ 12,895 $ 97 $ 284,226 $ (271,428)
Ending balance (in shares) at Dec. 31, 2019 97,413,721 97,413,721