Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.20.2
Stock-Based Compensation (Narrative) (Details)
9 Months Ended
Sep. 30, 2020
USD ($)
$ / shares
shares
Employee Stock Options [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Stock options granted (in shares) | shares 660,071
Unrecognized costs related to share based compensation | $ $ 13,300,000
Weighted average period of recognition of unrecognized costs related to stock options, years 2 years 7 months 2 days
Equity Option [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares $ 14.67
Restricted Stock Units [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares $ 79.43
Unrecognized costs related to share based compensation | $ $ 21,500,000
Weighted average period of recognition of unrecognized costs related to stock options, years 2 years 4 months 2 days
Restricted stock units granted (in shares) | shares 209,972