Description of Business (Details Textual) - USD ($)	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Jun. 25, 2015
Description of Business [Line Items]
Royalty Revenues From Sales Percentage	72.00%	67.00%		73.00%	79.00%	80.00%	80.00%
Royalty Revenue, Total	$ 2,272,000	$ 5,097,000		$ 5,496,000	$ 10,302,000
Sigma Tau [Member]
Description of Business [Line Items]
Royalty Settlement Claim Amount								$ 526,128
Royalty Revenue, Total		$ 300,000	$ 826,128