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Stockholders' Equity - Employee Stock Purchase Program (ESPP) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 35,713	$ 39,378	$ 100,856	$ 114,378
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under ESPP (in shares)	0	0	697,000	292,000
Shares issuable pursuant to the ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum employee contribution as a percentage of salary			15.00%
Offering period duration			6 months
Purchase price of common stock, percent			85.00%
Stock-based compensation expense	$ 800	$ 500	$ 3,100	$ 2,300

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