SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of Credit Risk and Major Customers (Details)		3 Months Ended	12 Months Ended
		Dec. 31, 2018 USD ($) Customer	Dec. 31, 2018 USD ($) Customer	Dec. 31, 2017 USD ($) Customer	Dec. 31, 2016 USD ($)
Concentration of Credit Risk and Major Customers [Abstract]
Accounts receivable		$ 16,518,687	$ 16,518,687	$ 4,655,105
Total Revenues			32,961,443	27,443,752	$ 26,250,955
Royalties [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Total Revenues		9,900,000	32,921,764	27,426,117	25,431,012
ASU 2014-09 [Member] | Adjustments / Effect of Change Higher / (Lower) [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Accounts receivable		9,700,000	9,700,000
ASU 2014-09 [Member] | Adjustments / Effect of Change Higher / (Lower) [Member] | Royalties [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Total Revenues		1,400,000	1,300,000
Endo [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Accounts receivable		$ 16,518,687	$ 16,518,687	$ 4,655,105
Number of customers | Customer		1	1	1
Endo [Member] | Royalties [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Total Revenues			$ 33,000,000	$ 27,400,000	$ 26,300,000
Endo [Member] | ASU 2014-09 [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Accounts receivable				12,300,000
Endo [Member] | ASU 2014-09 [Member] | Adjustments / Effect of Change Higher / (Lower) [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Accounts receivable	[1]			$ 7,600,000

[1] This adjustment represents the elimination of the one quarter lag by recognizing royalty revenues based on of XIAFLEX net sales and mark-up on cost of goods sold revenues reported to us by Endo for the fourth quarter of 2017.