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Litigation (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2022 USD ($)
Settled Litigation [Member] | Amphastar Pharmaceuticals vs Astellas-Gilead | Other income (expenses) | Astellas-Gilead |
Loss Contingencies [Line Items] |
Litigation Settlement, amount paid to the Company | $ 5.4

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