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Condensed Consolidated Statements of Stockholders’ Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2021   163,137,000      
Beginning balance at Dec. 31, 2021 $ 174,393 $ 16 $ 178,851 $ (4,093) $ (381)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock based compensation expense 1,068   1,068    
Issuance of common stock for vesting of restricted stock units (in shares)   133,000      
Shares withheld related to net share settlement of stock-based awards (in shares)   (36,000)      
Shares withheld related to net share settlement of stock-based awards (97)   (97)    
Issuance of common stock for commitment shares under Standby Equity Purchase Agreement (in shares)   19,000      
Issuance of common stock for commitment shares under Standby Equity Purchase Agreement 62   62    
Net and comprehensive loss (24,856)     (24,030) (826)
Ending balance (in shares) at Mar. 31, 2022   163,253,000      
Ending balance at Mar. 31, 2022 $ 150,570 $ 16 179,884 (28,123) (1,207)
Beginning balance (in shares) at Dec. 31, 2022 168,817,000 168,817,000      
Beginning balance at Dec. 31, 2022 $ 112,075 $ 17 190,215 (77,418) (739)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock options exercised (in shares) 1,647,000 2,000      
Stock based compensation expense $ 1,987   1,987    
Issuance of common stock for vesting of restricted stock units (in shares)   1,591,000      
Shares withheld related to net share settlement of stock-based awards (in shares)   (581,000)      
Shares withheld related to net share settlement of stock-based awards (382)   (382)    
Net and comprehensive loss $ (23,929)     (24,331) 402
Ending balance (in shares) at Mar. 31, 2023 169,829,000 169,829,000      
Ending balance at Mar. 31, 2023 $ 89,751 $ 17 $ 191,820 $ (101,749) $ (337)