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Product Revenues, Accounts Receivable, and Reserves for Product Sales (Tables)

12 Months Ended

Dec. 31, 2024

Product Revenues Accounts Receivable And Reserves For Product Sales [Abstract]

Schedule of Disaggregation of Product Revenue by Major Source

The table reflects net product revenue by major source for the following periods (in thousands):

		Year Ended December 31,
		2024				2023				2022
Products:
EMPAVELI		$	98,091			$	91,033			$	65,092
SYFOVRE			611,863				275,248				—
Total product revenue, net		$	709,954			$	366,281			$	65,092

Summary of Product Revenue Allowance and Reserve Categories

The following table summarizes activity in each of the product revenue allowance and reserve categories as of December 31, 2024 (in thousands):

		Fees and patient assistance				Government and other rebates				Returns				Total
Ending balance at December 31, 2022		$	164			$	1,936			$	251			$	2,351
Provision related to sales in the current year			17,690				26,661				4,698				49,050
Adjustments related to prior period sales			(112	)			(1,223	)			(2,481	)			(3,817	)
Credits and payments made			(12,068	)			(18,476	)			(415	)			(30,960	)
Ending balance at December 31, 2023		$	5,674			$	8,898			$	2,053			$	16,625
Provision related to sales in the current year			46,506				89,094				3,936				139,536
Adjustments related to prior period sales			1,461				(19	)			(96	)			1,346
Credits and payments made			(42,052	)			(66,440	)			(3,870	)			(112,362	)
Ending balance at December 31, 2024		$	11,589			$	31,533			$	2,023			$	45,145

Schedule of Customer Accounted for 10% of More of Gross Product Revenues and Accounts Receivable

Significant customers - Gross product revenues and product sales receivable from the Company's customers who individually accounted for 10% of more of total gross product revenues and/or 10% or more of total product sales receivable consisted of the following:

		Percent of Total Gross Product Revenues
		Year Ended December 31,
		2024		2023		2022
Customer A		13%		24%		99%
Customer C		19%		16%			—
Customer D		59%		54%		1%

		Percent of Product Sales Receivable
		As of December 31,
		2024		2023
Customer A		3%		4%
Customer C		29%		22%
Customer D		55%		66%

Schedule of Factoring of Accounts Receivable and Associated Fees

Factoring of accounts receivable and associated fees for the years ended December 31, 2024 and 2023 were as follows (in thousands):

		December 31,				December 31,				December 31,
		2024				2023				2022
Accounts receivable sold		$	142,698			$	—			$	—
Less: factoring fees			(1,700	)			—				—
Net cash proceeds		$	140,998			$	—			$	—

The accounts receivable sold that remained outstanding as of December 31, 2024 and 2023 was

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Product revenue reserves and allowances.

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Product revenues, accounts receivable, and reserves for product sales.

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

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Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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Tabular disclosure of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4D
-SubTopic 20
-Topic 860
-Publisher FASB
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