Revenues (Details) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Products:
Net revenues	$ 11,902,747	$ 8,587,605
Acetadote
Products:
Net revenues	849,502	1,273,764
Omeclamox-Pak
Products:
Net revenues	199,537	141,392
Kristalose
Products:
Net revenues	3,307,658	3,269,901
Vaprisol
Products:
Net revenues	286,676	93,890
Caldolor
Products:
Net revenues	1,317,074	1,039,747
Ethyol
Products:
Net revenues	3,091,991	2,256,073
Totect
Products:
Net revenues	80,896	412,774
Vibativ
Products:
Net revenues	2,060,195	0
Other
Products:
Net revenues	$ 709,218	$ 100,064

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration