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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in- Capital
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2019   86,069,263      
Beginning balance at Dec. 31, 2019 $ 80,747 $ 9 $ 162,062 $ (81,297) $ (27)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Equity-based compensation 441   441    
Issuance of common stock (in shares)   1,081,184      
Issuance of common stock 2,766   2,766    
Other comprehensive income (loss) 10       10
Net loss 1,150     1,150  
Ending balance (in shares) at Mar. 31, 2020   87,150,447      
Ending balance at Mar. 31, 2020 85,114 $ 9 165,269 (80,147) (17)
Beginning balance (in shares) at Dec. 31, 2019   86,069,263      
Beginning balance at Dec. 31, 2019 80,747 $ 9 162,062 (81,297) (27)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Other comprehensive income (loss) 365        
Net loss (3,161)        
Ending balance (in shares) at Jun. 30, 2020   87,206,346      
Ending balance at Jun. 30, 2020 81,752 $ 9 165,863 (84,458) 338
Beginning balance (in shares) at Mar. 31, 2020   87,150,447      
Beginning balance at Mar. 31, 2020 85,114 $ 9 165,269 (80,147) (17)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of options (in shares)   55,899      
Exercise of options 50   50    
Equity-based compensation 544   544    
Other comprehensive income (loss) 355       355
Net loss (4,311)     (4,311)  
Ending balance (in shares) at Jun. 30, 2020   87,206,346      
Ending balance at Jun. 30, 2020 81,752 $ 9 165,863 (84,458) 338
Beginning balance (in shares) at Dec. 31, 2020   87,651,352      
Beginning balance at Dec. 31, 2020 61,506 $ 9 167,379 (105,965) 83
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of options (in shares)   342,246      
Exercise of options 546   546    
Equity-based compensation 517   517    
Other comprehensive income (loss) (51)       (51)
Net loss (12,477)     (12,477)  
Ending balance (in shares) at Mar. 31, 2021   87,993,598      
Ending balance at Mar. 31, 2021 50,041 $ 9 168,442 (118,442) 32
Beginning balance (in shares) at Dec. 31, 2020   87,651,352      
Beginning balance at Dec. 31, 2020 $ 61,506 $ 9 167,379 (105,965) 83
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of options (in shares) 342,246        
Other comprehensive income (loss) $ (78)        
Net loss (26,746)        
Ending balance (in shares) at Jun. 30, 2021   88,096,694      
Ending balance at Jun. 30, 2021 36,640 $ 9 169,337 (132,711) 5
Beginning balance (in shares) at Mar. 31, 2021   87,993,598      
Beginning balance at Mar. 31, 2021 50,041 $ 9 168,442 (118,442) 32
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Equity-based compensation 764   764    
Issuance of common stock-ESPP (in shares)   103,096      
Issuance of common stock-ESPP 131   131    
Other comprehensive income (loss) (27)       (27)
Net loss (14,269)     (14,269)  
Ending balance (in shares) at Jun. 30, 2021   88,096,694      
Ending balance at Jun. 30, 2021 $ 36,640 $ 9 $ 169,337 $ (132,711) $ 5