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Intangible Assets (Narrative) (Details) - USD ($) shares in Thousands	1 Months Ended		12 Months Ended
	Nov. 30, 2018	Nov. 30, 2016	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill			$ 882,000	$ 882,000
Other revenue, potential upfront payment related to product sales			4,800,000
Payments to acquire businesses			0	5,000,000	$ 20,000,000
Additions to intangible assets			1,973,110	772,944	3,819,486
Amortization of intangible assets			4,434,120	4,134,557	$ 2,769,466
Product and License Rights
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross			38,543,542	37,400,742
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross			10,306,922	9,882,511
Additions to intangible assets			500,000	$ 700,000
Methotrexate
Acquired Finite-Lived Intangible Assets [Line Items]
Payments to acquire businesses		$ 100,000
Stock issued during period, acquisitions			900,000
Intellectual property amortizable intangible assets			2,800,000
Methotrexate | Nordic
Acquired Finite-Lived Intangible Assets [Line Items]
Stock issued during period, acquisitions			1,000,000.0
Methotrexate | Restricted Stock
Acquired Finite-Lived Intangible Assets [Line Items]
Stock issued during period, acquisitions (in shares)		180
VIBATIV
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 882,000
Payments to acquire businesses	20,000,000.0		20,000,000
Intellectual property amortizable intangible assets	$ 11,750,000
Increase in goodwill			$ 100,000

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