Number of countries exceeding the ten percent net product sales threshold.

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- Definition

Number of Distributors

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- Definition

Percentage of net product sales

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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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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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Revenue recognition - Net Product Sales (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) country segment Distributor	Jun. 30, 2023 USD ($) Distributor country segment	Jun. 30, 2024 USD ($) segment country Distributor	Jun. 30, 2023 USD ($) Distributor segment country	Dec. 31, 2023 USD ($)
Revenue recognition
Number of operating segments \| segment	1	1	1	1
Revenue	$ 186,704	$ 213,808	$ 396,822	$ 434,190
Net product revenue \| Geographic concentration risk
Revenue recognition
Number of countries exceeding 10% of net product sales \| country	2	3	3	3
Percentage of net product sales threshold	10.00%	10.00%	10.00%	10.00%
Net product revenue \| Geographic concentration risk \| United States
Revenue recognition
Revenue	$ 47,300	$ 65,700	$ 104,800	$ 120,300
Net product revenue \| Geographic concentration risk \| Non-US
Revenue recognition
Revenue	85,900	108,900	206,000	241,800
Net product revenue \| Geographic concentration risk \| Russia
Revenue recognition
Revenue		19,100	54,800	63,700
Net product revenue \| Geographic concentration risk \| Brazil
Revenue recognition
Revenue	$ 30,400	$ 23,100	$ 39,100	$ 48,900
Net product revenue \| Customer concentration risk
Revenue recognition
Number of distributors \| Distributor	2	2	2	2
Percentage of net product sales threshold	10.00%	10.00%	10.00%	10.00%
Product
Revenue recognition
Revenue	$ 133,220	$ 174,592	$ 310,824	$ 362,149
Contract with customer, liability	0		0		$ 0
Emflaza \| Net product revenue \| Geographic concentration risk \| United States
Revenue recognition
Revenue	47,300	65,700	104,800	120,300
Translarna \| Net product revenue \| Geographic concentration risk \| Non-US
Revenue recognition
Revenue	$ 70,400	$ 96,500	$ 173,900	$ 211,600