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Goodwill and Intangible Assets (Summary of Intangible Assets) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Definite-lived intangible assets |  |  |
Weighted-Average Life (Years) | 12 years | 12 years |
Finite-Lived Intangible Assets, Gross | $ 12,442 | $ 12,587 |
Accumulated Amortization | 5,861 | 5,137 |
Finite-Lived Intangible Assets, Net | 6,581 | 7,450 |
Indefinite-lived intangible assets |  |  |
Goodwill recognized | 3,386 | 3,940 | $ 3,634
Subtotal, Original Cost | 32,611 | 33,165 |
Subtotal, Net Book Value | 32,611 | 33,165 |
Balance, Original Cost | 45,053 | 45,752 |
Balance, Net Book Value | 39,192 | 40,615 |
Finished Pharmaceutical Products |  |  |
Indefinite-lived intangible assets |  |  |
Goodwill recognized | 3,386 | 3,940 |
Trademarks |  |  |
Indefinite-lived intangible assets |  |  |
Indefinite-lived intangible assets | $ 29,225 | $ 29,225 |
Patents |  |  |
Definite-lived intangible assets |  |  |
Weighted-Average Life (Years) | 12 years | 12 years |
Finite-Lived Intangible Assets, Gross | $ 486 | $ 486 |
Accumulated Amortization | 329 | 297 |
Finite-Lived Intangible Assets, Net | $ 157 | $ 189 |
Land-use rights |  |  |
Definite-lived intangible assets |  |  |
Weighted-Average Life (Years) | 39 years | 39 years |
Finite-Lived Intangible Assets, Gross | $ 2,540 | $ 2,540 |
Accumulated Amortization | 667 | 617 |
Finite-Lived Intangible Assets, Net | $ 1,873 | $ 1,923 |
International Medication Systems (UK) Limited | Acquired international product rights |  |  |
Definite-lived intangible assets |  |  |
Weighted-Average Life (Years) | 10 years | 10 years |
Finite-Lived Intangible Assets, Gross | $ 9,416 | $ 9,561 |
Accumulated Amortization | 4,865 | 4,223 |
Finite-Lived Intangible Assets, Net | $ 4,551 | $ 5,338 |

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