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Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Product Information [Line Items] |  |  |  |
Net product sales | $ 22,443 | $ 22,668 | $ 42,461 | $ 48,068
Accounting Standards Update 2019-12 |  |  |  |
Product Information [Line Items] |  |  |  |
Change in accounting principle, accounting standards update, adopted | true |  | true |
Change in accounting principle, accounting standards update, immaterial effect | true |  | true |
CINVANTI |  |  |  |
Product Information [Line Items] |  |  |  |
Net product sales | $ 19,700 | 22,600 | $ 38,200 | 47,800
SUSTOL |  |  |  |
Product Information [Line Items] |  |  |  |
Net product sales | $ 2,700 | $ 100 | $ 4,300 | $ 300

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