Income taxes - Reconciliation of the Difference Between Income Taxes Computed at the Statutory Federal Income Tax Rate and the Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Tax at U.S. statutory rate	$ (3,453)	$ (18,048)	$ 67,404
State income taxes, net of benefit	5,111	5,502	2,307
Foreign operations	12,018	26,985	4,448
Permanent book/tax differences	6,809	6,598	409
Share-based compensation	(18,925)	(20,663)	(269,009)
Change in valuation allowance	111,497	62,048	278,761
Tax credits	(93,887)	(52,319)	(79,787)
Provision for income taxes	$ 19,170	$ 10,103	$ 4,533

Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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