Share-Based Compensation - Unrecognized Compensation Expense (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 151,956
Stock options
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 17,048
Average Expected Recognition Period - in Years	2 years 9 months 10 days
Restricted stock units and awards
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 134,908
Average Expected Recognition Period - in Years	2 years 10 months 6 days