SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of Credit Risk and Major Customers and Revenue Recognition (Details)	3 Months Ended			6 Months Ended
	Jun. 30, 2018 USD ($) Customer		Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Customer		Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Concentration Risk [Line Items]
Total revenues	$ 7,096,409	[1]	$ 6,535,516	$ 14,185,818	[1]	$ 14,226,135
Accounts receivable	12,893,893	[1]		12,893,893	[1]		$ 4,655,105
Royalties [Member]
Concentration Risk [Line Items]
Total revenues	7,061,139	[1]	6,531,107	14,146,139	[1]	14,217,317
Licensing Revenues [Member]
Concentration Risk [Line Items]
Total revenues	$ 35,270	[1]	4,409	$ 39,679	[1]	8,818
Endo [Member]
Concentration Risk [Line Items]
Number of customers | Customer	1			1
Total revenues	$ 7,061,139		$ 6,531,107	$ 14,146,139		$ 14,217,317
Accounts receivable	$ 12,893,893			$ 12,893,893			$ 4,655,105

[1] As of January 1, 2018, the Company adopted the requirements of ASC 606 using the modified retrospective adoption method, and as a result, there is a lack of comparability of certain amounts to the prior periods presented. See Note 2 for additional discussion.