Restructuring charges - Restructuring Liability (Details) - First quarter 2024 restructuring $ in Thousands	6 Months Ended
Jun. 30, 2024 USD ($)
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 2,257
Restructuring Reserve [Roll Forward]
Restructuring liability as of October 1, 2016	0
Restructuring charges	(5,533)
Cash paid	(1,490)
Non-cash settlements	(3,498)
Restructuring liability as of December 31, 2017	545
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability as of October 1, 2016	0
Cash paid	(1,490)
Non-cash settlements	(222)
Restructuring liability as of December 31, 2017	545
Cease of use impairment charge
Restructuring Reserve [Roll Forward]
Cash paid	0
Restructuring Costs and Asset Impairment Charges	$ 3,276

Restructuring Charges, Excluding Stock-based Compensation

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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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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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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