Legal Matters	12 Months Ended
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]
Legal Matters	Legal Matters Legal Proceedings In March 2025, we received a notice from Zydus Lifesciences Global FZE (Zydus FZE) that it had filed an abbreviated new drug application, or ANDA, with the FDA seeking approval of a generic version of INGREZZA SPRINKLE (valbenazine). The ANDA contained a Paragraph IV Patent Certification alleging that certain of our patents covering INGREZZA SPRINKLE are invalid and/or will not be infringed by Zydus FZE’s importation, manufacture, use or sale of the medicine for which the ANDA was submitted. We filed suit in the U.S. District Court for the District of Delaware in April 2025 against Zydus Pharmaceuticals (USA) Inc. and its affiliates Zydus FZE, Zydus Worldwide DMCC (entity subsequently dismissed), Zydus Lifesciences Limited, and Zydus Healthcare (USA) LLC (entity subsequently dismissed) (collectively, Zydus). The complaint alleged that by filing their ANDAs, Zydus infringed certain of our patents covering INGREZZA SPRINKLE and sought to prevent Zydus from selling a generic version of INGREZZA SPRINKLE. We also filed suit in the U.S. District Court for the District of New Jersey in April 2025 against Zydus on a similar factual basis seeking to prevent Zydus from selling a generic version of INGREZZA SPRINKLE and this case was dismissed in favor of continued prosecution of the Delaware proceeding against the same entities. From time to time, we may become subject to other legal proceedings or claims arising in the ordinary course of our business. We currently believe that none of the claims or actions pending against us is likely to have, individually or in the aggregate, a material adverse effect on our business, financial condition, or results of operations. Given the unpredictability inherent in litigation, however, we cannot predict the outcome of these matters. U.S. Department of Justice Investigation In August 2025, we received a civil investigative demand from the U.S. Department of Justice (DOJ) requesting certain documents and information related to our sales and marketing of INGREZZA. We are cooperating with the DOJ’s request. No assurance can be given as to the timing or outcome of the DOJ’s investigation.

In March 2025, we received a notice from Zydus Lifesciences Global FZE (Zydus FZE) that it had filed an abbreviated new drug application, or ANDA, with the FDA seeking approval of a generic version of INGREZZA SPRINKLE (valbenazine). The ANDA contained a Paragraph IV Patent Certification alleging that certain of our patents covering INGREZZA SPRINKLE are invalid and/or will not be infringed by Zydus FZE’s importation, manufacture, use or sale of the medicine for which the ANDA was submitted. We filed suit in the U.S. District Court for the District of Delaware in April 2025 against Zydus Pharmaceuticals (USA) Inc. and its affiliates Zydus FZE, Zydus Worldwide DMCC (entity subsequently dismissed), Zydus Lifesciences Limited, and Zydus Healthcare (USA) LLC (entity subsequently dismissed) (collectively, Zydus). The complaint alleged that by filing their ANDAs, Zydus infringed certain of our patents covering INGREZZA SPRINKLE and sought to prevent Zydus from selling a generic version of INGREZZA SPRINKLE. We also filed suit in the U.S. District Court for the District of New Jersey in April 2025 against Zydus on a similar factual basis seeking to prevent Zydus from selling a generic version of INGREZZA SPRINKLE and this case was dismissed in favor of continued prosecution of the Delaware proceeding against the same entities.

From time to time, we may become subject to other legal proceedings or claims arising in the ordinary course of our business. We currently believe that none of the claims or actions pending against us is likely to have, individually or in the aggregate, a material adverse effect on our business, financial condition, or results of operations. Given the unpredictability inherent in litigation, however, we cannot predict the outcome of these matters.