SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of Credit Risk and Major Customers (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) Customer	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Customer	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Concentration of Credit Risk and Major Customers [Abstract]
Total revenues	$ 9,442,253	$ 8,168,081	$ 26,424,380	$ 23,108,264
Accounts receivable	17,768,757		17,768,757		$ 16,518,687
Royalties [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Total revenues	$ 9,442,253	8,168,081	$ 26,424,380	23,068,585
Endo [Member]
Concentration of Credit Risk and Major Customers [Abstract]
Number of customers | Customer	1		1
Total revenues	$ 9,400,000	$ 8,200,000	$ 26,400,000	$ 23,100,000
Accounts receivable	$ 17,800,000		$ 17,800,000		$ 16,500,000