PRINCIPAL BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Product Sales:
Sales Revenue, Goods, Net													$ (13,381,853)	$ (8,206,036)	$ (4,043,819)
Grant and other income:
Other Revenue, Net													0	0	11,934
Total Revenue	$ 4,646,711	$ 3,824,299	$ 3,566,226	$ 3,113,518	$ 3,083,615	$ 2,411,708	$ 2,222,338	$ 1,810,182	$ 1,760,978	$ 1,343,625	$ 963,939	$ 723,074	15,150,754	9,527,843	4,791,616
United States [Member]
Grant and other income:
Other Revenue, Net													1,768,901	1,321,807	735,863
Germany [Member]
Product Sales:
Sales Revenue, Goods, Net													7,993,954	4,985,049	2,353,998
Grant and other income:
Other Revenue, Net													0	0	11,934
All other countries [Member]
Product Sales:
Sales Revenue, Goods, Net													$ 5,387,899	$ 3,220,987	$ 1,689,821