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COLLABORATION AGREEMENTS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2007
Percentage of gross profits related to sale products 50.00%    
Revenues recognized $ 8,673 $ 22,775  
Minimum [Member]      
Royalties Maturity     2016
Maximum [Member]      
Royalties Maturity     2024