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v3.20.1

Additions and Returns of Product Rights - Narrative (Details) - USD ($) shares in Thousands | 1 Months Ended | 3 Months Ended | 24 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2016 | Mar. 31, 2020 | Mar. 31, 2019 | Sep. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 12, 2018
Agreement |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  | $ 3,200,000 |  |  |  |  |
Direct expenses |  |  |  |  | 2,000,000.0 |  |  |  |  |
Discontinued operations income |  |  |  |  | $ 1,100,000 |  |  |  |  |
Inventory |  |  |  |  |  |  |  | $ 500,000 |  |
Agreement | Discontinued Operations |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Financial consideration received in exchange for product license rights |  |  |  | $ 800,000 |  |  |  |  |  |
Agreement | Scenario, Forecast |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Financial consideration received in exchange for product license rights |  |  |  |  |  | $ 5,000,000 |  |  |  |
Vibativ |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Payment to acquire business upon closing |  | $ 20,000,000.0 |  | 20,000,000 |  |  |  |  |  |
Cash payment during early 2019 | $ 5,000,000.0 |  |  | 5,000,000 |  |  |  |  |  |
Percentage of tiered royalty payments (up to) |  | 20.00% |  |  |  |  |  |  |  |
Additional liability |  |  |  | 7,829,848 |  |  |  | $ 8,633,589 | $ 9,502,000 | $ 9,034,000
Methotrexate |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Payment to acquire business upon closing |  |  | $ 100,000 |  |  |  |  |  |  |
Liability recorded |  |  | $ 900,000 |  |  |  |  |  |  |
Vested common stock, value |  |  |  | $ 900,000 |  |  |  |  |  |
Methotrexate | Subsequent Event |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Additional liability |  |  |  |  |  |  | $ 1,000,000.0 |  |  |
Methotrexate | Restricted Stock |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Unvested restricted shares (in shares) |  |  | 180 |  |  |  |  |  |  |

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