Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders' Equity (Unaudited)

v3.20.1
Condensed Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Other Comprehensive Loss
Beginning balance at Dec. 31, 2018 $ 5,377        
Beginning balance (in shares) at Dec. 31, 2018 6        
Increase (Decrease) in Temporary Equity [Roll Forward]          
Series A convertible preferred stock redeemed for cash $ (5,377)        
Series A convertible preferred stock redeemed for cash (in shares) (6)        
Ending balance at Mar. 31, 2019 $ 0        
Ending balance (in shares) at Mar. 31, 2019 0        
Beginning balance at Dec. 31, 2018 $ 5,827 $ 3 $ 118,062 $ (111,820) $ (418)
Beginning balance (in shares) at Dec. 31, 2018   27,253      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of stock options, net of vesting of restricted shares 35   35    
Exercise of stock options, net of vesting of restricted shares (in shares)   61      
Issuance of common stock related to cash-based exercise of common stock warrants 6,184   6,184    
Issuance of common stock related to cash-based exercise of common stock warrants (in shares)   617      
Issuance of common stock related to cashless exercise of warrants 0 $ 1 (1)    
Issuance of common stock related to cashless exercise of warrants (in shares)   10,400      
Series A convertible preferred stock redeemed for cash (863)   (863)    
Waiver of sponsor promissory note originally issued in conjunction with business combination 1,993   1,993    
Stock-based compensation expense 11   11    
Cumulative translation adjustment 27       27
Net loss (3,494)     (3,494) 0
Ending balance at Mar. 31, 2019 10,807 $ 4 125,421 (114,227) (391)
Ending balance (in shares) at Mar. 31, 2019   38,331      
Beginning balance at Dec. 31, 2019 $ 0        
Beginning balance (in shares) at Dec. 31, 2019 0        
Ending balance at Mar. 31, 2020 $ 0        
Ending balance (in shares) at Mar. 31, 2020 0        
Beginning balance at Dec. 31, 2019 $ 4,026 $ 4 128,008 (123,604) (382)
Beginning balance (in shares) at Dec. 31, 2019   39,811      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of stock options, net of vesting of restricted shares 16   16    
Exercise of stock options, net of vesting of restricted shares (in shares)   33      
Release of restricted stock (in shares)   116      
Issuance of common stock for payment of legal and board of director fees 492   492    
Issuance of common stock for payment of legal and board of director fees (in shares)   733      
Stock-based compensation expense 635   635    
Equity classified cash conversion feature of Senior Convertible Note 219   219    
Cumulative translation adjustment (72)       (72)
Net loss (3,963)     (3,963)  
Ending balance at Mar. 31, 2020 $ 1,353 $ 4 $ 129,370 $ (127,567) $ (454)
Ending balance (in shares) at Mar. 31, 2020   40,693