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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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Gross amount of indefinite-lived intangible assets and goodwill.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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