SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of Credit Risk and Major Customers and Revenue Recognition (Details)	1 Months Ended	3 Months Ended
	Feb. 29, 2016 USD ($)	Mar. 31, 2017 USD ($) Customer	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Concentration Risk [Line Items]
Royalty revenue		$ 7,686,210	$ 6,555,647
Accounts receivable		4,928,293		$ 3,810,792
Royalty / Mark-Up on Cost of Goods Sold [Abstract]
Deferred revenue recognized		4,409	12,304
Licensing Revenue [Abstract]
Recognized milestone revenue		$ 0	0
Endo [Member]
Concentration Risk [Line Items]
Number of customers | Customer		1
Royalty revenue		$ 7,700,000	6,600,000
Accounts receivable		4,900,000		$ 3,800,000
Royalty / Mark-Up on Cost of Goods Sold [Abstract]
Deferred revenue on licensing agreements		8,250,000
Proceeds from licensing agreement	$ 8,250,000
Deferred revenue recognized		$ 255,000	$ 0