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Revenue from contracts with customers - Schedule of Provisions for Sales Discounts and Allowances (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2026 USD ($)
Disaggregation of Revenue [Line Items]
Beginning balance	$ 316,035
Current provisions relating to sales in current year	665,609
Adjustments relating to prior years	(26,153)
Payments relating to sales in current year	(448,841)
Payments relating to sales in prior years	(168,246)
Ending Balance	367,425
Avadel Acquisition
Disaggregation of Revenue [Line Items]
Avadel beginning balance as of February 12, 2026	29,021
Contractual Adjustments
Disaggregation of Revenue [Line Items]
Beginning balance	211,440
Current provisions relating to sales in current year	310,678
Adjustments relating to prior years	(17,719)
Payments relating to sales in current year	(151,519)
Payments relating to sales in prior years	(130,931)
Ending Balance	223,424
Contractual Adjustments | Avadel Acquisition
Disaggregation of Revenue [Line Items]
Avadel beginning balance as of February 12, 2026	1,475
Discounts
Disaggregation of Revenue [Line Items]
Beginning balance	41,327
Current provisions relating to sales in current year	268,479
Adjustments relating to prior years	(5,320)
Payments relating to sales in current year	(243,525)
Payments relating to sales in prior years	(17,281)
Ending Balance	59,179
Discounts | Avadel Acquisition
Disaggregation of Revenue [Line Items]
Avadel beginning balance as of February 12, 2026	15,499
Product Returns
Disaggregation of Revenue [Line Items]
Beginning balance	55,455
Current provisions relating to sales in current year	13,688
Adjustments relating to prior years	(3,324)
Payments relating to sales in current year	(137)
Payments relating to sales in prior years	(5,206)
Ending Balance	61,200
Product Returns | Avadel Acquisition
Disaggregation of Revenue [Line Items]
Avadel beginning balance as of February 12, 2026	724
Other
Disaggregation of Revenue [Line Items]
Beginning balance	7,813
Current provisions relating to sales in current year	72,764
Adjustments relating to prior years	210
Payments relating to sales in current year	(53,660)
Payments relating to sales in prior years	(14,828)
Ending Balance	23,622
Other | Avadel Acquisition
Disaggregation of Revenue [Line Items]
Avadel beginning balance as of February 12, 2026	$ 11,323

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