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Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2024

Accounting Policies [Abstract]

Fair Value Measurement Specific to Assets or Liability

		Fair Value Measurements at Reporting Date Using (in thousands)
		Balances as of December 31, 2024				Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Cash and cash equivalents:
Money market funds		$	109,947			$	109,947			$	—			$	—
U.S. Treasuries		$	329,457			$	329,457			$	—			$	—
Investment in equity securities:
Equity securities		$	21,564			$	21,564			$	—			$	—

		Balances as of December 31, 2023				Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Cash and cash equivalents:
Money market funds		$	18,256			$	18,256			$	—			$	—
U.S. Treasuries		$	94,523			$	94,523			$	—			$	—
Investment in equity securities:
Equity securities		$	16,489			$	16,489			$	—			$	—

Summary of Disaggregated Product Revenue

The following table summarizes the Company’s net product revenue disaggregated by product (in thousands):

		For the Years Ended December 31,
		2024				2023				2022
FIRDAPSE®		$	306,035			$	258,426			$	213,938
FYCOMPA®+			137,251				138,076				—
AGAMREE®*			46,041				—				—
Total product revenue, net		$	489,327			$	396,502			$	213,938

+ FYCOMPA® net product revenue for the year ended December 31, 2023 is for the period between January 24, 2023 (date of acquisition) and December 31, 2023.

* AGAMREE® net product revenue for the year ended December 31, 2024 is for the period between March 13, 2024 (date of commercial launch) and December 31, 2024.

Summary of Percentage of the Company's Total Net Product Revenue

The following table illustrates the approximate percentage of the Company’s total net product revenue attributed to the Company’s largest customers for the periods presented:

		For the Years Ended December 31,
		2024				2023				2022
Customer A			72.0	%			65.2	%			100.0	%
Customer B*			—				34.8	%			—
Total			72.0	%			100.0	%			100.0	%

* During 2023, the Company sold FYCOMPA® through a Transition Service Agreement with a U.S. subsidiary of Eisai. Effective January 1, 2024, FYCOMPA® is being sold and distributed through a third party logistics (3PL) organization under the Company's contracts.

Basic and Dilutive Weighted Average Common Shares

The following table reconciles basic and diluted weighted average common shares:

		For the Years Ended December 31,
		2024				2023				2022
Basic weighted average common shares outstanding			118,457,673				106,279,736				103,374,606
Effect of dilutive securities			6,485,930				7,473,418				8,001,025
Diluted weighted average common shares outstanding			124,943,603				113,753,154				111,375,631

Schedule of Significant Segment Expenses

The following table illustrates information about significant segment expenses:

		For the Years Ended December 31,
		2024				2023				2022
Research and development		$	12,648			$	93,150			$	19,789
Selling			118,746				91,500				31,044
General and administrative (a)			58,994				42,210				26,041
Total		$	190,388			$	226,860			$	76,874

(a) exclusive of amortization of intangible assets

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