SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of Credit Risk and Major Customers (Details)	3 Months Ended
Mar. 31, 2019 USD ($) Customer	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Concentration of Credit Risk and Major Customers [Abstract]
Total revenues	$ 8,129,141	$ 7,089,409
Accounts receivable	16,476,790		$ 16,518,687
Royalties [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Total revenues	$ 8,129,141	7,085,000
Endo [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Number of customers \| Customer	1
Total revenues	$ 8,129,141	$ 7,089,409
Accounts receivable	$ 16,476,790		$ 16,518,687

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