XML 70 R57.htm IDEA: XBRL DOCUMENT v3.21.2
Stock-based compensation - Narrative (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Increased number of issuance of awards under the 2013 Plan (in shares) 2,700,000 2,200,000            
Number of shares available for issuance (in shares)     2,500,000   2,500,000      
Stock-based compensation expense     $ 28,338 $ 38,818 $ 101,863 $ 123,640    
Amount capitalized     100   800      
Unrecognized stock- based compensation expense related to unvested stock options, restricted stock units, performance-based restricted stock units and employee stock purchase plan     179,100   $ 179,100      
Expected weighted-average period related to unvested stock options, restricted stock units, performance-based restricted stock units and employee stock purchase plan         2 years 1 month 6 days      
Granted (in shares)         1,188,000      
Stock option share exercised (in shares)         219,000      
Proceed from option share exercised         $ 1,500      
Retention Program                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Employee benefits and share-based compensation expense     3,100   27,100      
Maximum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Amount capitalized       300   400    
ESPP shares and other                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock-based compensation expense     4,315 4,160 $ 16,591 $ 12,473    
Common shares reserved for future issuance (in shares)               200,000
Increase in shares authorized (in shares)             1,400,000  
Shares of common stock issued under plan (in shares)         100,000      
ESPP shares and other | Maximum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares of common stock issued under plan (in shares)           100,000    
Restricted stock units                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock-based compensation expense     10,335 $ 11,935 $ 33,601 $ 37,931    
Unrestricted Stock Awards | 2020 Annual Incentive Program                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Granted (in shares) 400,000              
Unrestricted Stock Awards | Retention Program                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock-based compensation expense     $ 1,600   $ 13,600      
Granted (in shares)     100,000