Stock-Based Compensation - Employee stock purchase plan (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Stock-Based Compensation
Stock-based compensation expense	$ 25,088	$ 27,379	$ 74,862	$ 78,728
2021 Employee Stock Purchase Plan
Stock-Based Compensation
Purchase price of common stock purchased (in percent)			85.00%
Stock-based compensation expense	$ 100	$ 200	$ 400	$ 600

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details