Disaggregated Revenues (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Revenue Recognition
Non-cash royalty revenue	$ 1,567	$ 1,576
Net product sales	(94,976)	(85,474)
Net earnings	(21,518)	(18,340)
Trokendi XR
Revenue Recognition
Net product sales	(68,551)	$ (63,693)
Trokendi XR \| Sales Returns
Revenue Recognition
Provision for product returns	8,000
Net product sales	8,000
Net earnings	$ 5,900
Earnings per basic and diluted share (in dollars per share)	$ 0.11
Revenues \| Customer Concentration Risk \| Trokendi XR
Revenue Recognition
Concentration risk percentage (more than)	74.00%	77.00%

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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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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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