Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - (Narrative) (Details)

v3.20.2
Stock-Based Compensation - (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 4,521 $ 5,768 $ 11,389 $ 18,153
Dividend rate used     0.00%  
Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost related to unvested options 7,000   $ 7,000  
Weighted average period for compensation cost to be recognized     2 years 7 months 6 days  
RSA/RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost related to unvested restricted shares $ 13,000   $ 13,000  
Weighted average period for compensation cost to be recognized     1 year 10 months 24 days  
RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Outstanding units (in shares) 427   427  
Series A common stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of options granted (in shares)     528  
Shares reserved for issuance upon exercise (in shares) 1,000   1,000  
Series B common stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares reserved for issuance upon exercise (in shares) 1,200   1,200  
CEO | RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of options granted (in shares)     3  
Options, weighted average GDFV (in dollars per share)     $ 59.80  
Percentage of base salary     50.00%  
Percentage of base salary to be waived     50.00%  
CEO | Series A common stock | CEO New Employment Agreement        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of options granted (in shares)     359  
Options, weighted average GDFV (in dollars per share)     $ 16.60  
CEO | Series A common stock | CEO Annual Award        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of options granted (in shares)     148  
Options, weighted average GDFV (in dollars per share)     $ 13.21