XML 27 R6.htm IDEA: XBRL DOCUMENT v3.22.0.1
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income [Member]
Balance at Dec. 31, 2019 $ 8,330 $ 11 $ 472,765 $ (465,286) $ 840
Balance, shares at Dec. 31, 2019   10,941,659      
Net loss (45,394)     (45,394)  
Other comprehensive income 1       1
Issuance of stock, net of issue costs 49,853 $ 7 49,846    
Issuance of stock, net of issue costs, shares   7,100,815      
Employee stock purchase plan 294   294    
Employee stock purchase plan, shares   33,697      
Vesting of stock units (90)   (90)    
Vesting of stock units, shares   63,810      
Stock-based compensation 5,547   5,547    
Balance at Dec. 31, 2020 $ 18,541 $ 18 528,362 (510,680) 841
Balance, shares at Dec. 31, 2020 18,139,981 18,139,981      
Net loss $ (58,417)     (58,417)  
Issuance of stock and pre-funded warrants, net of issue costs 216,586 $ 16 216,570    
Issuance of stock and pre-funded warrants, net of issue costs, shares   15,635,811      
Employee stock purchase plan 273   273    
Employee stock purchase plan, shares   43,365      
Exercise of stock options 100   100    
Exercise of stock options, shares   8,112      
Vesting of stock units (150)   (150)    
Vesting of stock units, shares   78,557      
Stock-based compensation 7,447   7,447    
Balance at Dec. 31, 2021 $ 184,380 $ 34 $ 752,602 $ (569,097) $ 841
Balance, shares at Dec. 31, 2021 33,905,826 33,905,826