Disaggregated Revenues - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Noncash royalty revenue	$ 9,800	$ 9,400	$ 8,500
Prior year sale adjustments, percentage	1.00%	1.00%
Estimated adjustment for product returns related to prior year sales			13,800
Total revenues	$ 667,238	$ 579,775	520,397
Trokendi XR
Disaggregation of Revenue [Line Items]
Estimated adjustment for product returns related to prior year sales			10,700
Total revenues	261,221	304,817	319,640
Net product sales
Disaggregation of Revenue [Line Items]
Total revenues	$ 649,432	$ 567,504	$ 509,350
Percentage of Net Product Sales \| Product Concentration Risk \| Trokendi XR
Disaggregation of Revenue [Line Items]
Concentration risk percentage (more than)	40.00%	50.00%	60.00%

Contract With Customer, Change In Refund Liability

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Contract With Customer, Prior Year Sale Adjustments, Percentage

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Represents revenue from the sale of certain royalty and milestone rights.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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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, 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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