Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.21.2
Stock-Based Compensation (Narrative) (Details)
6 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | shares 533,105
Stock Options [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Weighted average grant date fair value | $ / shares $ 17.52
Unrecognized costs related to share based compensation | $ $ 15,600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 9 months 7 days
Restricted Stock Units (RSUs) [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Estimated average fair value per restricted stock unit granted | $ / shares $ 96.16
Unrecognized costs related to share based compensation | $ $ 26,300,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 6 months 10 days
Granted, number of shares | shares 171,773