Condensed Consolidated Statement of Shareholders’ Equity - USD ($)
$ in Thousands
Total
Common Shares
Treasury Shares
Additional Paid-In Capital
Accumulated Deficit
Accumulated Other Comprehensive Income
IPO
IPO
Common Shares
Beginning balance (in shares) at Dec. 31, 2018   20,672,025 408,070          
Beginning balance at Dec. 31, 2018 $ 69,485 $ 145,709 $ (2,854) $ 15,156 $ (88,975) $ 449    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of shares in an asset acquisition (in shares)   12,404            
Issuance of shares in an asset acquisition 337 $ 337            
Stock option exercises (in shares)   5,941            
Stock option exercises 84 $ 84            
Warrant exercises (in shares)   70,567            
Warrant exercises 56 $ 113   (57)        
Share-based compensation (in shares)   45,394            
Share-based compensation 1,836 $ 45   1,791        
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)   (2,528)            
Shares withheld to cover income tax obligation upon vesting of restricted stock (56) $ (3)   (53)        
Foreign currency translation gain 67         67    
Net loss (10,779)       (10,779)      
Ending balance (in shares) at Mar. 31, 2019   20,803,803 408,070          
Ending balance at Mar. 31, 2019 61,030 $ 146,285 $ (2,854) 16,837 (99,754) 516    
Beginning balance (in shares) at Dec. 31, 2018   20,672,025 408,070          
Beginning balance at Dec. 31, 2018 69,485 $ 145,709 $ (2,854) 15,156 (88,975) 449    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of common stock 630              
Foreign currency translation gain 572              
Net loss (32,594)              
Ending balance (in shares) at Sep. 30, 2019   20,983,139 408,070          
Ending balance at Sep. 30, 2019 43,804 $ 147,208 $ (2,854) 19,998 (121,569) 1,021    
Beginning balance (in shares) at Mar. 31, 2019   20,803,803 408,070          
Beginning balance at Mar. 31, 2019 61,030 $ 146,285 $ (2,854) 16,837 (99,754) 516    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Stock option exercises (in shares)   22,289            
Stock option exercises 92 $ 92            
Warrant exercises (in shares)   16,754            
Warrant exercises 0 $ 16   (16)        
Share-based compensation (in shares)   41,024            
Share-based compensation 1,894 $ 41   1,853        
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)   (1,451)            
Shares withheld to cover income tax obligation upon vesting of restricted stock (35) $ (1)   (34)        
Foreign currency translation gain (154)         (154)    
Net loss (9,040)       (9,040)      
Ending balance (in shares) at Jun. 30, 2019   20,882,419 408,070          
Ending balance at Jun. 30, 2019 53,787 $ 146,433 $ (2,854) 18,640 (108,794) 362    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of common stock (in shares)   33,333            
Issuance of common stock 630 $ 630            
Stock option exercises (in shares)   24,820            
Stock option exercises 102 $ 102            
Share-based compensation (in shares)   44,547            
Share-based compensation 1,444 $ 45   1,399        
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)   (1,980)            
Shares withheld to cover income tax obligation upon vesting of restricted stock (43) $ (2)   (41)        
Foreign currency translation gain 659         659    
Net loss (12,775)       (12,775)      
Ending balance (in shares) at Sep. 30, 2019   20,983,139 408,070          
Ending balance at Sep. 30, 2019 43,804 $ 147,208 $ (2,854) 19,998 (121,569) 1,021    
Beginning balance (in shares) at Dec. 31, 2019   21,057,040 408,070          
Beginning balance at Dec. 31, 2019 39,614 $ 147,688 $ (2,854) 21,214 (127,125) 691    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of common stock (in shares)               2,628,571
Issuance of common stock             $ 63,855 $ 63,855
Stock option exercises (in shares)   39,723            
Stock option exercises 181 $ 181            
Share-based compensation (in shares)   11,062            
Share-based compensation 1,629 $ 11   1,618        
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)   (1,383)            
Shares withheld to cover income tax obligation upon vesting of restricted stock (34) $ (1)   (33)        
Foreign currency translation gain 2,821         2,821    
Net loss (17,759)       (17,759)      
Ending balance (in shares) at Mar. 31, 2020   23,735,013 408,070          
Ending balance at Mar. 31, 2020 90,307 $ 211,734 $ (2,854) 22,799 (144,884) 3,512    
Beginning balance (in shares) at Dec. 31, 2019   21,057,040 408,070          
Beginning balance at Dec. 31, 2019 39,614 $ 147,688 $ (2,854) 21,214 (127,125) 691    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of common stock $ 618              
Stock option exercises (in shares) 83,652              
Foreign currency translation gain $ 3,312              
Net loss (32,477)              
Ending balance (in shares) at Sep. 30, 2020   23,827,680 408,070          
Ending balance at Sep. 30, 2020 79,957 $ 212,752 $ (2,854) 25,658 (159,602) 4,003    
Beginning balance (in shares) at Mar. 31, 2020   23,735,013 408,070          
Beginning balance at Mar. 31, 2020 90,307 $ 211,734 $ (2,854) 22,799 (144,884) 3,512    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Stock option exercises (in shares)   22,734            
Stock option exercises 193 $ 193            
Share-based compensation (in shares)   5,802            
Share-based compensation 1,557 $ 6   1,551        
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)   (762)            
Shares withheld to cover income tax obligation upon vesting of restricted stock (13) $ (1)   (12)        
Foreign currency translation gain 213         213    
Net loss (10,471)       (10,471)      
Ending balance (in shares) at Jun. 30, 2020   23,762,787 408,070          
Ending balance at Jun. 30, 2020 81,786 $ 211,932 $ (2,854) 24,338 (155,355) 3,725    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of common stock (in shares)   33,334            
Issuance of common stock 618 $ 618            
Stock option exercises (in shares)   21,195            
Stock option exercises 192 $ 192            
Share-based compensation (in shares)   11,302            
Share-based compensation 1,348 $ 11   1,337        
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)   (938)            
Shares withheld to cover income tax obligation upon vesting of restricted stock (18) $ (1)   (17)        
Foreign currency translation gain 278         278    
Net loss (4,247)       (4,247)      
Ending balance (in shares) at Sep. 30, 2020   23,827,680 408,070          
Ending balance at Sep. 30, 2020 $ 79,957 $ 212,752 $ (2,854) $ 25,658 $ (159,602) $ 4,003