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Organization and Summary of Significant Accounting Policies - Organization (Details) $ in Millions		12 Months Ended
	Mar. 01, 2024 USD ($)	Dec. 31, 2023 product item
Business Acquisition [Line Items]
Product pipeline, number of product candidates | product		3
Number of reportable and operating segments | item		1
Coherus Ophthalmology LLC | CIMERLI Disposition Transaction | Subsequent Event
Business Acquisition [Line Items]
Business combination consideration transferred	$ 170.0
Consideration transferred for CIMERLI product inventory and prepaid manufacturing assets	$ 17.8

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Amount of consideration transferred for inventory and prepaid manufacturing assets.

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Number of operating and reportable segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Represents the number of drug candidates in the product pipeline.

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-Topic 805
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-Name Accounting Standards Codification
-Section 50
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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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