v3.8.0.1
Statements of Changes in Shareholders’ Equity - USD ($)
$ in Thousands
Total
Restricted shares
Restricted share units
Common Stock
Common Stock
Restricted shares
Common Stock
Restricted share units
Additional Paid-In Capital
Additional Paid-In Capital
Restricted share units
Accumulated Other Comprehensive Loss
Accumulated Deficit
Common shares outstanding, beginning balance (in shares) at Dec. 31, 2015       80,089,858            
Shareholders' equity, beginning balance at Dec. 31, 2015 $ 195,317     $ 231,452     $ 11,719   $ 0 $ (47,854)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Exercise of stock options (in shares) 3,037,644     3,037,644            
Exercise of stock options $ 4,162     $ 9,077     (4,915)      
Stock-based compensation 23,545           23,545      
Vesting of restricted shares (in shares)         48,238 104,740        
Vesting of restricted share units   $ 202 $ 0   $ 202 $ 3,340   $ (3,340)    
Issuance of Class A shares (in shares)       6,125,000            
Issuance of Class A shares 224,423     $ 224,423            
Net loss and comprehensive loss for the year (37,173)               (1,818) (35,355)
Common shares outstanding, ending balance (in shares) at Dec. 31, 2016       89,405,480            
Shareholders' equity, ending balance at Dec. 31, 2016 $ 410,476     $ 468,494     27,009   (1,818) (83,209)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Exercise of stock options (in shares) 3,322,993     3,322,993            
Exercise of stock options $ 14,774     $ 24,959     (10,185)      
Stock-based compensation 50,535           50,535      
Vesting of restricted shares (in shares)         824,215          
Vesting of restricted share units   $ 0     $ 23,967   (23,967)      
Issuance of Class A shares (in shares)       6,325,000            
Issuance of Class A shares 560,057     $ 560,057            
Net loss and comprehensive loss for the year (34,742)               5,253 (39,995)
Common shares outstanding, ending balance (in shares) at Dec. 31, 2017       99,877,688            
Shareholders' equity, ending balance at Dec. 31, 2017 $ 1,001,100     $ 1,077,477     $ 43,392   $ 3,435 $ (123,204)