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Intangible Assets (Narrative) (Details) - USD ($) shares in Thousands		1 Months Ended		12 Months Ended
	Oct. 29, 2013	Nov. 30, 2018	Nov. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 28, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Other revenue, potential upfront payment related to product sales				$ 4,600,000
Additions to intangible assets				3,819,486	$ 1,213,110	$ 2,000,226
Payments to acquire businesses				20,000,000	0	0
Goodwill				784,000	0
Amortization of intangible assets				2,769,466	2,436,222	$ 2,194,039
Product and License Rights
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross				36,573,941	21,879,981
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross				9,428,266	9,177,647
Additions to intangible assets				400,000	400,000
Vaprisol | Product and License Rights
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross							$ 3,000,000.0
Pernix Therapeutics | Collaborative Arrangement, Amended International Agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Other revenue, potential upfront payment related to product sales	$ 4,000,000.0			2,300,000
Methotrexate
Acquired Finite-Lived Intangible Assets [Line Items]
Payments to acquire businesses			$ 100,000
Stock issued during period, acquisitions				1,100,000	$ 1,300,000
VIBATIV
Acquired Finite-Lived Intangible Assets [Line Items]
Payments to acquire businesses		$ 20,000,000.0		$ 20,000,000
Intellectual property amortizable intangible assets		11,700,000
Goodwill		$ 784,000
Restricted Stock | Methotrexate
Acquired Finite-Lived Intangible Assets [Line Items]
Stock issued during period, acquisitions (in shares)			180

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Revenue Recognition, Potential Upfront Payment Related to Product Sales

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The amount of identifiable intangible assets recognized as of the acquisition date.

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