Stock-based Compensation - Stock-based Compensation Expense - By Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total stock based compensation expense
Subtotal	$ 93,035	$ 76,602	$ 54,653
Capitalized stock-based compensation costs	(1,405)	(1,076)
Stock-based compensation expense included in total cost and operating expenses	91,630	75,526	54,653
Stock Options
Total stock based compensation expense
Subtotal	57,912	57,237	47,726
Restricted Stock Units
Total stock based compensation expense
Subtotal	33,939	18,407	6,445
Employee Stock
Total stock based compensation expense
Subtotal	$ 1,184	$ 958	$ 482