Share-Based Compensation - Unrecognized Compensation Expense (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 140,862
Stock options
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 15,541
Average Expected Recognition Period - in Years	2 years 7 months 6 days
Restricted stock units and awards
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 125,321
Average Expected Recognition Period - in Years	2 years 8 months 4 days