REVENUES - Company's disaggregation of revenues (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 16, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues		$ 10,790	$ 14,248	$ 43,403	$ 36,934
Non refundable payments not yet recognized to revenues	$ 1,000
Chiesi Agreements [Member]
Other Operating Income				6,700
Goods [Member]
Revenues		3,296	5,126	11,975	12,086
Goods [Member] | Pfizer [Member]
Revenues				5,844	4,701
Goods [Member] | Brazil [Member]
Revenues				6,000	7,385
Goods [Member] | Chiesi [Member]
Revenues				131
License and R&D Services [Member]
Revenues		$ 7,494	$ 9,122	$ 31,428	$ 24,848