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Stock-Based Compensation Narrative (Details)
$ in Millions
6 Months Ended
Jun. 30, 2020
USD ($)
shares
Share-based Payment Arrangement, Option [Member]  
[Line Items]  
Compensation cost not yet recognized | $ $ 3.4
Unrecognized compensation expense, Expected weighted average period for recognition (years) 2 years 2 months 12 days
Restricted Stock Units (RSUs) [Member]  
[Line Items]  
Compensation cost not yet recognized | $ $ 38.0
Unrecognized compensation expense, Expected weighted average period for recognition (years) 2 years
Employee Stock Purchase Plan [Member]  
[Line Items]  
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) 204,451
Stock Incentive Plan [Member]  
[Line Items]  
Share-based compensation arrangement by share-based payment award, number of shares authorized (in shares) 12,623,538
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) 5,611,617
Reduction in stock options available for issue 1
Authorized share reserve reduction in awards other than stock options or share appreciation rights available for issue, conversion ratio 1.7