Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Disaggregation Of Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Revenue	$ 14,913,363	$ 13,243,107	$ 29,861,943	$ 27,835,361
United States [Member]
Net Revenue	13,361,000		26,337,000
Rest Of World [Member]
Net Revenue	1,552,000		3,524,000
Concentrate Products [Member]
Net Revenue	14,845,000		29,725,000
Concentrate Products [Member] | United States [Member]
Net Revenue	13,361,000		26,337,000
Concentrate Products [Member] | Rest Of World [Member]
Net Revenue	1,484,000		3,388,000
License Fee [Member] | Drug Revenue [Member]
Net Revenue	68,000		136,000
License Fee [Member] | Drug Revenue [Member] | Rest Of World [Member]
Net Revenue	68,000		136,000
License Fee [Member] | Concentrate Products [Member]
Net Revenue	505,000		1,009,000
License Fee [Member] | Concentrate Products [Member] | United States [Member]
Net Revenue	505,000		1,009,000
Product Sales [Member] | Concentrate Products [Member]
Net Revenue	14,340,000		28,716,000
Product Sales [Member] | Concentrate Products [Member] | United States [Member]
Net Revenue	12,856,000		25,328,000
Product Sales [Member] | Concentrate Products [Member] | Rest Of World [Member]
Net Revenue	$ 1,484,000		$ 3,388,000