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PATENTS, NET OF ACCUMULATED AMORTIZATION (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Patents Net Of Accumulated Amortization    
Remainder of 2021 $ 2,612  
2022 10,448  
2023 10,381  
2024 9,005  
2025 6,630  
Thereafter 750  
Patents, net   $ 39,826 $ 16,912