LICENSE AGREEMENTS AND COMMITMENTS - Lease agreements (Details) $ in Thousands	1 Months Ended
	Feb. 28, 2019 USD ($) ft²	Nov. 01, 2021 USD ($)	Aug. 31, 2020	Dec. 31, 2019 ft²	Jan. 31, 2018 USD ($)
Manufacturing facility, Indiana
Leases
Lease term			2 years
Laboratory, New Jersey
Leases
Leased area (in square feet) | ft²	4,548
Additional leased area (in square feet) | ft²				235
Lease term	3 years
Option to extend	true
Option to extend, period	2 years
Fixed rent payable per annum	$ 177
Lease payable per month	$ 15
Corporate headquarters, New York
Leases
Lease term					6 years
Fixed rent payable per annum					$ 384
Lease payable per month					$ 32
Office space, Denmark
Leases
Lease term		4 years
Lease payable per month		$ 41