REVENUES - Company's disaggregation of revenues (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 16, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues		$ 10,967	$ 12,247	$ 32,613	$ 22,686
Non refundable payments not yet recognized to revenues	$ 1,000
Pfizer [Member]
Revenues				2,679	2,735
Brazil [Member]
Revenues				6,000	4,225
Chiesi US Agreement [Member]
Revenue recognized due to change in estimate of total costs expected to be incurred				6,700
Goods [Member]
Revenues		3,648	3,430	8,679	6,960
License and R&D Services [Member]
Revenues		$ 7,319	$ 8,817	$ 23,934	$ 15,726